$(function() {
	$("a img.swap").mouseover(function() {
		this.src = this.src.replace(/^(.+)(\.[a-z]+)$/, "$1_o$2");
	});
	$("a img.swap").mouseout(function() {
		this.src = this.src.replace(/^(.+)_o(\.[a-z]+)$/, "$1$2");
	});
	$("a img.swap").each(function () {
		this.preloaded = new Image;
		this.preloaded.src = this.src.replace(/^(.+)(\.[a-z]+)$/, "$1_o$2");
	});
});