$(function()
{
	$(".swap").each(function()
	{
		$("<img>").attr("src",$(this).attr("src").replace(/^(.+)(_off)(\.[a-z]+)$/, "$1_over$3"));
	})
	
	$(".swap").mouseover(function()
	{
		$(this).attr("src",$(this).attr("src").replace(/^(.+)(_off)(\.[a-z]+)$/, "$1_over$3"));
	})
	.mouseout(function()
	{
		$(this).attr("src",$(this).attr("src").replace(/^(.+)(_over)(\.[a-z]+)$/, "$1_off$3"));
	})
})