/* BEGIN GLOBAL.JS */
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}
// Solves an IE caching problem
var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}


function preventDefaultEvent(e){
    if(e.preventDefault)
        e.preventDefault();
    else
        e.returnValue = false;
    return false;
}
/* END GLOBAL */


/* Gallery */

var init = function() {
	var linkBoxes = getElementsByClass('gallery_links',null,'div');
	var currents = [];
	for(var i=0; i<linkBoxes.length; i++) { // all gallery boxes
		var links = linkBoxes[i].getElementsByTagName('a');
		var boxNum = linkBoxes[i].id.replace('image_links_',''); 
		var targetImg = document.getElementById('thumb_'+boxNum);
		//var targetImgDiv = document.getElementById('thumbnail_'+boxNum);
		 
		currents[boxNum] = links[0]; // to hold first selection
		
		for (var j=0; j<links.length; j++) {
			links[j].targetImg = targetImg;
			//links[j].targetImgDiv = targetImgDiv;
			links[j].boxNum = boxNum;
			addEvent(links[j], 'click', function(e) {
				//this.targetImgDiv.style.backgroundImage = ;
				this.targetImg.setAttribute('src','images/loader.gif');
				this.targetImg.setAttribute('src',this.getAttribute('href'));
				currents[this.boxNum].className='';
				currents[this.boxNum] = this;
				this.className = 'selected';
				return preventDefaultEvent(e);
			});
		}
	}
	//document.getElementById('lightLoader').style.display = 'none';
};
addEvent(window,'load', init);