function img_rollover(e,a){var c=[];var d;var b;e=$(e);b=e.filter(a);e=e.not(b);b.each(function(){var h=$(this).attr("src");var f=h.substring(h.lastIndexOf("."),h.length);var g=h.replace(f,"_on"+f);this.setAttribute("src",g)});e.each(function(){var i=$(this).attr("src");var f=i.substring(i.lastIndexOf("."),i.length);var h=i.replace(f,"_on"+f);this.setAttribute("hsrc",h);if(this===b[0]){return}var g=new Image();g.src=h;c.push(g);$(this).mouseover(function(){d=$(this).attr("src");this.setAttribute("src",$(this).attr("hsrc"))});$(this).mouseout(function(){if(!d){d=$(this).attr("src").replace("_on"+f,f)}this.setAttribute("src",d)})})}$(function(a){img_rollover("img.imgover")});