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 fnRoll(imgName,strSrc) {
	if (document.images) document[imgName].src = strSrc;
}

window.onload=function() {
	MM_preloadImages(
		'images/s_home_on.jpg',
		'images/s_manufacturers_on.jpg',
		'images/s_contactus_on.jpg'
	);
};