var avatar	= ["http://i.livescience.com/common/community/template_images/Avatar_imaginova_gray.jpg", "http://i.livescience.com/common/community/template_images/Avatar_imaginova.jpg"];

var SOloc		= "http://dev.spaceholdings.com/imaginova/communities/";
var captchaKey 	= "6LcVvwAAAAAAAMRouTmot0uuPtO3DE2a33dTegK1";

function chk_form(obj){
	var err = false;
	var e = Form.getInputs($(obj));
	
	for( var i = 0; i < e.length; i++){
		if(e[i].alt == 'req' && e[i].present() != true ){
			e[i].addClassName('error');
			if(e[i].title != '' && $('err_'+e[i].id) == null){ 
				var em = new Element('span',{'id':'err_'+e[i].id, 'class':'error_msg' }).update(e[i].title);
				e[i].parentNode.appendChild(em);
			}
			err = true;
		}
	}
	if(err === true){
		return false;
	}else{ return true; }
}


	

var FlashTag = Class.create({
	initialize: function(src, width, height) {
		this.src       = src;
		this.width     = width;
		this.height    = height;
		this.version   = '7,0,14,0';
		this.id        = null;
		this.bgcolor   = 'ffffff';
		this.flashVars = null;
		this.chkflash();
	},
	setVersion: function(v){ this.version = v },
	setId: function(id){ this.id = id; },
	setBgcolor: function(bgc){ this.bgcolor = bgc; },
	setFlashvars: function(fv){ this.flashVars = fv; },
	toString: function(){
		var flashTag = new String();
		if(ie){
			flashTag += '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" ';
			if (this.id != null) flashTag += 'id="'+this.id+'" ';
			flashTag += 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version='+this.version+'" ';
			flashTag += 'width="'+this.width+'" ';
			flashTag += 'height="'+this.height+'">';
			flashTag += '<param name="movie" value="'+this.src+'"/>'
			flashTag += '<param name="quality" value="high"/>';
			flashTag += '<param name="wmode" value="transparent"/>';
			flashTag += '<param name="autoplay" value="true"/>';
			flashTag += '<param name="bgcolor" value="#'+this.bgcolor+'"/>';
			flashTag += '<param name="allowScriptAccess" value="always"/>';
			if (this.flashVars != null) flashTag += '<param name="flashvars" value="'+this.flashVars+'"/>';
        	flashTag += '</object>';
		}else{
			flashTag += '<embed src="'+this.src+'" ';
			flashTag += 'quality="high" '; 
			flashTag += 'bgcolor="#'+this.bgcolor+'" ';
			flashTag += 'width="'+this.width+'" ';
			flashTag += 'height="'+this.height+'" ';
			flashTag += 'wmode=transparent ';
			flashTag += 'autoPlay=true ';
			flashTag += 'allowScriptAccess="always" '; 
			flashTag += 'type="application/x-shockwave-flash" ';
			if (this.flashVars != null) flashTag += 'flashvars="'+this.flashVars+'" ';
			if (this.id != null) flashTag += 'name="'+this.id+'" ';
			flashTag += 'pluginspage="http://www.macromedia.com/go/getflashplayer">';
			flashTag += '</embed>';
		}
		return flashTag;
	},
	write: function(doc){ doc.write(this.toString()); },
	chkflash: function(){ //// Need to add in plugin check //////
		this.plugin = true;
	}
});




function Clean(cmt) {
	var clean="";
	if(cmt.length>0){
			var clean=cmt.replace(/</g,"&lt;");
			clean=clean.replace(/>/g,"&gt;");
			clean=clean.replace(/\u2019/g,"&#8217;");
			clean=clean.replace(/\u201C/g,"&#8220;");
			clean=clean.replace(/\u201D/g,"&#8221;");
			clean=clean.replace(/\r\n/g,"\n");
			clean=clean.replace(/\n/g,"<br />\n");
	}
	return (clean);
 }

	
var tab_group = Class.create({
	initialize: function(nav, win, pos) {
		this.cur_tab = pos;
		this.tabs = new Array($(nav).childElements(), $(win).childElements());
		
		this.tabs[0][pos].addClassName('active');
		this.tabs[1][pos].addClassName('active');
		for(var i=0; i<this.tabs[0].length; i++){
			 Event.observe(this.tabs[0][i], 'click', this.action.bindAsEventListener(this,i));
		}
	},
	action: function(event, n){
		this.tabs[0][this.cur_tab].removeClassName('active');
		this.tabs[1][this.cur_tab].removeClassName('active');
		this.tabs[0][n].addClassName('active');
		this.tabs[1][n].addClassName('active');
		this.cur_tab = n;
	}
 })
 
var disc_widget = Class.create({
	initialize: function(id) {		
		this.cur_tab = 0;
		this.id 	 = $(id);
		this.group	 = $(id).getElementsByTagName('dl');
		this.tabs	 = $(id).getElementsByTagName('dt');
		this.views	 = $(id).getElementsByTagName('dd');
		
		this.group = (this.group.length > 0)? this.group[0] : this.id;
		if(!this.tabs[0]) return;
		if(!this.views[0]) return;
		
		try{
			var m = (id == 'dw_pop')? 0 : (this.tabs.length-1)*5;
			var w = ($(id).hasClassName('disc_mod'))? (($(id).offsetWidth - m) / this.tabs.length)-2 : Math.floor((this.group.offsetWidth - 2) / this.tabs.length);
			for(var i=0; i < this.tabs.length; i++){
				if(id != 'top-list') this.tabs[i].style.width = Math.ceil(w)+"px";
				
				if( this.tabs.length == 1)this.tabs[i].style.margin = 0;
				Event.observe(this.tabs[i], 'click', this.action.bindAsEventListener(this,i));
			}
			try{
				if($(this.id.parentNode).hasClassName('col4')){
					var list = this.id.getElementsByTagName('dl').item(0);
					for(var i=0; i < this.tabs.length; i++){
						list.appendChild(this.tabs[0]);
						list.appendChild(this.views[0]);
					}
				}
				
			}catch(e){  }
			this.tabs[0].addClassName('active');
			this.views[0].style.display = "block";
		}catch(e){ alert(e); }
	},
	action: function(event, n){
		this.tabs[this.cur_tab].removeClassName('active');
		this.views[this.cur_tab].style.display = 'none';
		this.tabs[n].addClassName('active');
		this.views[n].style.display = 'block';
		this.cur_tab = n;
	}
});

var carousel = Class.create({
	initialize: function(items) {	
		this.main_obj 	= $('carousel');
		this.objwrapper = $('carouselwrapper');
		if(!this.main_obj) return;
		
		this.pos		 = 0;
		this.moduleLimit = items;
		this.moveby 	 = items-1;
		this.duration	 = 1; // seconds
		this.disabled	 = false;
		this.elements	 = this.main_obj.getElementsByTagName("li").length;
		this.objwidth 	 = this.main_obj.getElementsByTagName("li").item(0).offsetWidth;
		
		if(this.elements <= this.moduleLimit){
			$('carousel_next').style.display = "none";
			$('carousel_prev').style.display = "none";
			return;
		}
		
		if(this.elements <= this.moduleLimit + this.moveby ){
			this.moveby = this.elements - this.moduleLimit;
			this.duration = (this.elements - 3)*.1;
		}
		
		this.shiftBy = this.moveby * this.objwidth;
		
		this.content_obj = this.main_obj.getElementsByTagName("ul").item(0);
		this.content_obj.style.width = this.elements * this.objwidth+"px";
		

		/* PRIME EFFECTS */
		new Effect.MoveBy(this.objwrapper, 0, 0, {duration: 0.0, transition: Effect.Transitions.sinoidal});
		
		this.setControls($('carousel_next'), "-16px", this.next_item.bindAsEventListener(this));
		this.setControls($('carousel_prev'), "0px", this.prev_item.bindAsEventListener(this));

	},
	next_item: function(event){
		if(this.disabled) return;
		this.disabled = true;
		this.shift = this.shiftBy*-1;
		if(this.pos < 0 ){
			for(var i= 0; i < this.moveby; i++){
				this.content_obj.appendChild(this.content_obj.firstDescendant());
			}
			this.pos = 0;
			this.objwrapper.style.left = "0px";
		}
		this.action();
	},
	prev_item: function(event){
		if(this.disabled) return;
		this.disabled = true;
		this.shift = this.shiftBy;
		if(this.pos >= 0 ){
			for(var i= 1; i <= this.moveby; i++){
				Element.insert(this.content_obj, {top: this.content_obj.getElementsByTagName("li").item(this.elements-1)} )
				
			}
			this.pos = this.shiftBy * -1;
			this.objwrapper.style.left = this.pos+"px";
		}
		this.action();
	},
	action: function() {
		this.pos += this.shift;
		new Effect.MoveBy(this.objwrapper, 0, this.shift, {duration: this.duration, transition: Effect.Transitions.sinoidal, afterFinish: this.disabled = false })
	},
	end: function(event) {
		//updateItems(mycarousel);
		this.disabled = false;
	},
	setControls: function(obj, left, f) {
		Event.observe(obj, 'mouseover', function(e){ obj.style.backgroundPosition = left +" top"; });
		Event.observe(obj, 'mouseout', function(e){ obj.style.backgroundPosition = left +" bottom"; });
		Event.observe(obj, 'click', f);
	}
})

var related_module = Class.create({
	initialize: function() {
		this.cur_img = 0;
		this.images  = $('related_images_module').getElementsByTagName("dt");
		this.caption = $('related_images_module').getElementsByTagName("dd");
		this.cnt	 = this.images.length
		if(this.cnt > 1){
			var next = new set_control($('ri_next'), 'http://i.livescience.com/template_images/buttons/btn_nextsm.gif', 'http://i.livescience.com/template_images/buttons/btn_nextsm_inactive.gif', function(e){  related_images.next_img(this) });
			var prev = new set_control($('ri_prev'), 'http://i.livescience.com/template_images/buttons/btn_prevsm.gif', 'http://i.livescience.com/template_images/buttons/btn_prevsm_inactive.gif', function(e){  related_images.prev_img(this) });
		}else{
			$('ri_next').style.display = "none";
			$('ri_prev').style.display = "none";
		}
		Event.observe('ri_enlarge', 'click', this.navigate);
		this.populate(this.cur_img);
	},
	populate: function(n){
		var lnk = this.images[n].getElementsByTagName("a")[0].href;
		$('ri_imgHolder').innerHTML = this.images[n].innerHTML;
		$('ri_caption').innerHTML = this.caption[n].innerHTML;
		$('ri_count').innerHTML = (this.cur_img+1) + " of " + this.cnt;
		$('ri_enlarge').innerHTML = '<a href="'+lnk+'">Full Size</a>';
	},
	next_img:function(event){
		this.cur_img = (this.cur_img >= this.cnt)? 0 : this.cur_img+1;
		this.populate(this.cur_img);
	},
	prev_img:function(event ){
		this.cur_img = (this.cur_img <= 0)? this.cnt : this.cur_img-1;
		this.populate(this.cur_img);
	},
	navigate:function(){
		//window.location = myrelated.obj_dat[myrelated.cid].href;
	}
});

var related_resource_module = Class.create({
	initialize: function() {
		this.cur_img = 0;
		this.images  = $('related_resources_module').getElementsByTagName("dt");
		this.caption = $('related_resources_module').getElementsByTagName("dd");
		this.cnt	 = this.images.length;
		if(this.cnt > 1){
			var next = new set_control($('rr_next'), 'http://i.livescience.com/template_images/buttons/btn_nextsm.gif', 'http://i.livescience.com/template_images/buttons/btn_nextsm_inactive.gif', function(e){  related_resources.next_img(this) });
			var prev = new set_control($('rr_prev'), 'http://i.livescience.com/template_images/buttons/btn_prevsm.gif', 'http://i.livescience.com/template_images/buttons/btn_prevsm_inactive.gif', function(e){  related_resources.prev_img(this) });
		}else{
			$('rr_next').style.display = "none";
			$('rr_prev').style.display = "none";
		}
		Event.observe('rr_enlarge', 'click', this.navigate);
		this.populate(this.cur_img);
	},
	populate: function(n){
		var lnk = this.images[n].getElementsByTagName("a")[0].href;
		$('rr_imgHolder').innerHTML = this.images[n].innerHTML;
		$('rr_caption').innerHTML = this.caption[n].innerHTML;
		$('rr_count').innerHTML = (this.cur_img+1) + " of " + this.cnt;
		$('rr_enlarge').innerHTML = '<a href="'+lnk+'">Play Video</a>';
	},
	next_img:function(event){
		this.cur_img = (this.cur_img >= this.cnt)? 0 : this.cur_img+1;
		this.populate(this.cur_img);
	},
	prev_img:function(event ){
		this.cur_img = (this.cur_img <= 0)? this.cnt : this.cur_img-1;
		this.populate(this.cur_img);
	},
	navigate:function(){
		//window.location = myrelated.obj_dat[myrelated.cid].href;
	}
});


var init_Galleries = Class.create({
	initialize: function(id) {
		this.current = 0;
		this.id 	 = $(id);
		this.img	 = $(id).getElementsByTagName('dt');
		this.desc	 = $(id).getElementsByTagName('dd');
		this.type 	 = ($('topten'))? 'topten' : 'gallery'; 
		
		if($('img_progress')){
			this.bar 	 = $('img_progress').getElementsByTagName('input').item(0);
			this.bar_txt = $('img_progress').getElementsByTagName('h5').item(0);
		}else if($('ri_count')){
			this.bar 	 = false;
			this.bar_txt = $('ri_count');
		}else if($('topten')){
			var count = $('countdown').getElementsByTagName("li");
			for(var i=0; i < count.length; i++){
				count[i].setAttribute('value', i);
				count[i].setAttribute('id', 'num_'+i);
				Event.observe(count[i], 'click', this.update.bindAsEventListener(count[i],this));
			}
		}
		this.set_progress();
	},
	next: function(){		
		if(this.current < this.img.length){
			this.desc[this.current].style.display = "none";
			this.img[this.current].style.display = "none";
			if(this.type == 'topten') $('num_'+this.current).removeClassName('selected');
			this.current++;
			this.set_progress();
			if (this.current == this.img.length-1)
			{
				buttonurl = document.getElementById('nextimg').src.split('buttons');
				document.getElementById('nextimg').src = buttonurl[0] + 'buttons/btn_backintro.gif';
				document.getElementById('nextimg').width = 128;
				introurl = document.location.href.split('-1.');
				document.getElementById('next').href = introurl[0]+'.html';
			}
			
			if(typeof(_hbPageView) == 'function')_hbPageView(page,section);
			refreshAds();
		}
		
	},
	prev: function(){
		if(this.current-1 >= 0){
			this.desc[this.current].style.display = "none";
			this.img[this.current].style.display = "none";
			if(this.type == 'topten') $('num_'+this.current).removeClassName('selected');
			var previous = this.current;
			this.current--;
			this.set_progress();
			if (previous == this.img.length-1 && this.current == this.img.length-2)
			{
				buttonurl = document.getElementById('nextimg').src.split('buttons');
				document.getElementById('nextimg').src = buttonurl[0] + 'buttons/btn_next_active.gif';
				document.getElementById('nextimg').width = 50;
				document.getElementById('next').href = "javascript:topten.next();";
			}
		
			if(typeof(_hbPageView) == 'function')_hbPageView(page,section);
			refreshAds();
		}
	},
	update: function(obj,f){
		var previous = f.current;
		f.desc[f.current].style.display = "none";
		f.img[f.current].style.display = "none";
		$('num_'+f.current).removeClassName('selected');
		f.current = this.getAttribute('value');
		f.set_progress();
		if (f.current == f.img.length-1)
		{
			buttonurl = document.getElementById('nextimg').src.split('buttons');
			document.getElementById('nextimg').src = buttonurl[0] + 'buttons/btn_backintro.gif';
			document.getElementById('nextimg').width = 128;
			introurl = document.location.href.split('-1.');
			document.getElementById('next').href = introurl[0]+'.html';
		}
		if (f.current < f.img.length-1)
		{
			buttonurl = document.getElementById('nextimg').src.split('buttons');
			document.getElementById('nextimg').src = buttonurl[0] + 'buttons/btn_next_active.gif';
			document.getElementById('nextimg').width = 50;
			document.getElementById('next').href = "javascript:topten.next();";
		}
		
		if(typeof(_hbPageView) == 'function')_hbPageView(page,section);
		refreshAds();
		
	},
	link: function(){
		var goto = this.img[this.current].getElementsByTagName('a').item(0);
		window.location = goto.href;
	},
	set_progress: function(){
		if(this.type == 'gallery'){
			if(this.bar){
				var output = "IMAGE "+(this.current+1)+" of "+this.img.length;
				this.bar.style.backgroundPosition = (((this.current+1)/this.img.length)*150)-150+"px 0px";
			}else{
				var output = (this.current+1)+" of "+this.img.length;
			}
			this.bar_txt.innerHTML = output;
				
			$('next').style.backgroundPosition = (this.current+1 < this.img.length)?'bottom':'top';
			$('prev').style.backgroundPosition = (this.current > 0)?'bottom':'top';
		}
		if(this.type == 'topten'){
			$('num_'+this.current).addClassName('selected');
		}
		this.desc[this.current].style.display = "block";
		this.img[this.current].style.display = "block";
		
	}
 });



function ts_size(s, id){
	if(!$(id).style.fontSize){ var size=1.3; }
	else{
		var size = $(id).style.fontSize.split("em");
			size = size.shift();
	}
	if(s == 'min'){
		$(id).style.fontSize = size-0.2+"em";
	}else{
		$(id).style.fontSize = Math.abs(size)+0.2+"em";
	}
}

var set_control = Class.create({
	initialize: function(obj, active, inactive, f) {		
		Event.observe(obj, 'mouseover', function(e){ obj.src = active; });
		Event.observe(obj, 'mouseout', function(e){ obj.src = inactive; });
		Event.observe(obj, 'click', f);
	}
});

var sect = document.URL.split("/");

function setNav(){
	try{
		nav_obj = $('navigation').getElementsByTagName('a');
		if(nav_obj.length > 1){
			for(n=1; n < nav_obj.length; n++){
				var h = document.URL.split(nav_obj[n].getAttribute('href'));
				
				if(h.length >= 2) nav_obj[n].className = "selected";
			}
		}
	}catch(e){}
}
Event.observe(window, 'load', setNav, false);


var showPrint = Class.create({
	initialize: function() {
		var obj		= document.body;
		this.copy   = Object.clone(obj);
		this.text = ($('article_text'))? $('article_text').innerHTML : $('article-copy').innerHTML;
		this.image = $('related_images_module');
		$('main').style.display = 'none';
		$('ibar').style.display = 'none';
		obj.addClassName('print_art');
		
		if($('article_text')){
			var hd = $('headline').innerHTML;
		}else{
			var hd = "<h1>"+ document.getElementsByTagName('h1')[0].innerHTML + "</h1><h4>" + document.getElementsByClassName('article-head')[0].getElementsByTagName('h4')[0].innerHTML + "</h4>";
		}
		var	str  = '<div class="right"><a href="javascript:window.location.reload( false )"><img src="http://i.livescience.com/template_images/buttons/btn_backto.gif"></a><br><br><a href="javascript:window.print()"><img src="http://i.livescience.com/template_images/buttons/btn_send2print.gif"></a></div>';
			
			str += '<img src="http://i.livescience.com/common/community/template_images/'+domain+'_reg_hd_logo.gif" alt="'+domain+'" />';
			str += '<div class="divider"></div>';
			str += '<div id="headline" class="clearfix">' + hd + '</div>'+this.text;
		
			str += '<div class="clearfix" id="footer">'+ $('footer').innerHTML + '</div>';
		obj.innerHTML = str;
		if(this.image){ $('related_images_module').style.display = 'none'; }
	}
});


function show_share(pos){
	$('share_items').style.display = ($('share_items').style.display == "none")?"block":"none";
	if(pos == 'left'){
		var w = ($('tb_share').offsetLeft + $('tb_share').offsetWidth) - $('share_items').offsetWidth;
		$('share_items').style.left = w+"px";
	}else{
		$('share_items').style.right = "0px";	
	}
	
}

function searchType(n,t){
	$('searchType').value = t;
	var tabs = $('searchTypeTab').getElementsByTagName('li');
	for(var i=0; i < tabs.length; i++){
		if(i == n){ tabs[i].addClassName('active'); }
		else{ tabs[i].removeClassName('active'); }
	}
}

function pagination(p,f){
	if (p < 0) pagenb = 0;
	$(f).page.value = p;
	$(f).submit();
	return;
}




function hbxMedia(vFileName,vCurrentPos,vEndPos,vAction){
	_hbSet('m.s',vAction);
	_hbSet('m.f',vFileName);
	_hbSet('m.cp',vCurrentPos);
	_hbSet('m.ep',vEndPos);
	_hbSet('m.cl','Flash Player');
	_hbSet('m.cv','9.0');
	_hbSet('m.tt','e');
	_hbSend();
}