function enableMenuImageRollovers()
{
        var imgs=$('.hover');
        for(i=0; i < imgs.length; i++)
        {
                var img=imgs[i];
                var txt=img.src;
                if(img.parentNode.className.indexOf("selected") < 0)
                {
                        var imgOn = new Image();
                        var imgOff = new Image();
                        imgOn.src=img.src.replace("_off","_on");
                        imgOff.src=img.src.replace("_on","_off");
        
                        img.imgOn = imgOn;
                        img.imgOff = imgOff;
        
                        img.onmouseover=function() {
                                this.src=this.imgOn.src;
                        }
                        img.onmouseout=function() {
                                this.src=this.imgOff.src;
                        }
                }
                else
                {
                        img.src=img.src.replace("_off","_on");
                }
        }

}

$(document).ready( enableMenuImageRollovers );