// Mouse-Over
j$(function(over){
j$(".over").mouseover(function(){
j$(this).attr("src",j$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/, "$1_over$2"))
}).mouseout(function(){
j$(this).attr("src",j$(this).attr("src").replace(/^(.+)_over(\.[a-z]+)$/, "$1$2"));
}).each(function(){
j$("<img>").attr("src",j$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/, "$1_over$2"))
})
});

//preload
var preLoad = function (url) {
jQuery('<img />')
.hide()
.attr('src', url)
.appendTo(document.body)
.load(function () { jQuery(this).remove(); })
.error(function () { jQuery(this).remove(); });
}