//=============================================
// rollover
//=============================================

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'over') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_on'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_on'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;

function AROverImg(classname, prefix, time){
	
	if(prefix == ''){
		prefix = '_on';
	}
	
	$("img").each(function(){

		var src = $(this).attr("src");
		
		if($(this).hasClass(classname) && src.indexOf(prefix + ".") == -1){
			
			var size = src.length;
			var over = src.substring(0, size - 4) + prefix + src.substring(size - 4, size);

			var par = $(this).parent();
			par.css("display", "block").css("position", "relative");
			
			var clone = $(this).clone();
			clone.attr("src", over).attr("class", "clone");
			clone.css("position", "absolute").css("top", "0").css("left", "0");
			
			$(this).after(clone);
			clone.hide();
			
			par.hover(
			    function(){
			    	$(this).find('.clone').stop(true , true).fadeIn(time);
			    },
			    function(){
			    	$(this).find('.clone').stop(true , true).fadeOut(time);
			    }
			); 
		}
	});
}