function trace() {
	str = "";
	for(var i=0; i<arguments.length;i++) {
		str = str + " " + arguments[i];
	}
	alert(str);
}

function zoomSnapshot(object_div) {
	if (object_div) {
		baseNode = object_div.parentNode;
		for (var count = 0; count < baseNode.getElementsByTagName('LI').length; count++) {
			baseNode.getElementsByTagName('LI')[count].getElementsByTagName('SPAN')[0].style.background = '#ffffff';
			baseNode.getElementsByTagName('LI')[count].getElementsByTagName('SPAN')[1].style.background = '#ffffff';		
		}
	
		//
		object_div.getElementsByTagName('SPAN')[0].style.background = '#e7ebdf';
		object_div.getElementsByTagName('SPAN')[1].style.background = '#e7ebdf';
		
		//
		imageURL = object_div.getElementsByTagName('SPAN')[0].firstChild.src.split('/');
		imageURL = imageURL[imageURL.length-1].split('.');
		imageURL = imageURL[0].substr(0,imageURL[0].length-1);
		imageURL = '<img src=\"images/'+imageURL+'b.jpg\">';
		//trace(imageURL);
			
		imageDesc = object_div.getElementsByTagName('SPAN')[2].innerHTML;
		baseNode = object_div.parentNode.parentNode.parentNode;
		imageTargetNode = baseNode.getElementsByTagName('DIV')[0].firstChild;
		textTargetNode = baseNode.getElementsByTagName('DIV')[0].getElementsByTagName('SPAN')[1];
		if (imageTargetNode.innerHTML != imageURL) {
			imageTargetNode.innerHTML = imageURL;
			textTargetNode.innerHTML = imageDesc;
		}
	}
}

function initPage() {
	var count = 1;
	while (document.getElementById("snaps_"+count)) {
		if (getQueryVariable("group") != count) highlightItem(count,1);
		count++;
	}
	if (getQueryVariable("group")) highlightItem(getQueryVariable("group"),getQueryVariable("item"));

	getSnapshotNodes();
}

function getSnapshotNodes() {
	var classElements = new Array();
	node = document;
	tag = 'li';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	for (i = 0, j = 0; i < elsLen; i++) {
		if (els[i].className == "snapshot_element") {
			els[i].onmouseover = function() {
				zoomSnapshot(this);
			}
		}
	}
	return classElements;
};

function highlightItem(vPanel,vItem) {
	zoomSnapshot(document.getElementById("snaps_"+vPanel).getElementsByTagName('LI')[vItem-1]);
}

function getQueryVariable(variable) {
	var query = window.location.search.substring(1);
	var vars = query.split("&");
	for (var i=0;i<vars.length;i++) {
		var pair = vars[i].split("=");
		if (pair[0] == variable) {
			return pair[1];
		}
	} 
// document.write( getQueryVariable("item") );
}

function swapDisplay(name) {
	if(window.opera) return;
	if(document.getElementById)
		element=document.getElementById(name);
	else if(document.all)
		element=document.all[name];

	if(element.style.display == "none")
		element.style.display = "";
	else
		element.style.display = "none";
		
}

// non-custom

function MM_preloadImages() { //v3.0
	var d=document;
	if(d.images){
		if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
		for(i=0; i<a.length; i++) {
			if (a[i].indexOf("#")!=0) {
				d.MM_p[j]=new Image;
				d.MM_p[j++].src=a[i];
			}
		}
	}
}

function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
	var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
	}
	if(!(x=d[n])&&d.all) x=d.all[n];
	for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments;
	document.MM_sr=new Array;
	for(i=0;i<(a.length-2);i+=3) {
		if ((x=MM_findObj(a[i]))!=null){
			document.MM_sr[j++]=x;
			if(!x.oSrc) x.oSrc=x.src;
			x.src=a[i+2];
		}
	}
	if (a[4]) {
		sendText(a[3],a[4]);
	}
}

function sendText(id,text) {
	if(document.getElementById) {
		mispan=document.getElementById(id);
		mispan.innerHTML = text;
	}
}

function cambia(id,text) {
	if(document.getElementById) {
		mispan=document.getElementById(id);
		while(mispan.hasChildNodes()) {
			mispan.removeChild(mispan.firstChild);
		}
		mispan.appendChild(document.createTextNode(text));
	}
}