var overImg = '_f2';
var ua = navigator.userAgent;
if(ua.indexOf("MSIE") != -1 && ua.indexOf("6.0") != -1) {
	var ie6 = true;
}
$(function(){
	$('.rollover').each(function(){
		var imgout = $(this).attr("src");
		var imgovr = imgout.replace('.gif', overImg+'.gif').replace('.jpg', overImg+'.jpg').replace('.png', overImg+'.png');
		$(this).hover(
			function(){ $(this).attr("src", imgovr); },
			function(){ $(this).attr("src", imgout); }
		);
	});
});