function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


function imgOn(imgName) {
if (document.images) {
	document[imgName].src = eval(imgName + "on.src");
	}
}
function imgOff(imgName) {
if (document.images) {
	document[imgName].src = eval(imgName + "off.src");
	}
}