jQuery.noConflict();
var j$ = jQuery;

var overImg = '_on';
var ua = navigator.userAgent;
if(ua.indexOf("MSIE") != -1 && ua.indexOf("6.0") != -1) {
	var ie6 = true;
}
j$(function(){
	j$('.rollover').each(function(){
		var classes = j$(this).attr("class");
		if(classes.indexOf("png") == -1) {
			var imgout = j$(this).attr("src");
			var imgovr = imgout.replace('.gif', overImg+'.gif').replace('.jpg', overImg+'.jpg').replace('.png', overImg+'.png');
			j$(this).hover(
				function(){ j$(this).attr("src", imgovr); },
				function(){ j$(this).attr("src", imgout); }
			);
		}
	});
});