if(document.images) {
        
        var  home1 = new Image();
        var  home2 = new Image();
		var  whoweare1 = new Image();
        var  whoweare2 = new Image();
        var  ourstaff1 = new Image();
        var  ourstaff2 = new Image();
        var  services1 = new Image();
        var  services2 = new Image();
        var  contactus1 = new Image();
        var  contactus2 = new Image();
        var  resources1 = new Image();
        var  resources2 = new Image();
        
        
     home1.src = "images/subnav_home_off.gif";
     home2.src = "images/subnav_home_on.gif";
     whoweare1.src = "images/subnav_whoweare_off.gif";
     whoweare2.src = "images/subnav_whoweare_on.gif";
     ourstaff1.src = "images/subnav_ourstaff_off.gif";
     ourstaff2.src = "images/subnav_ourstaff_on.gif";
     services1.src = "images/subnav_services_off.gif";
     services2.src = "images/subnav_services_on.gif";
     contactus1.src = "images/subnav_contactus_off.gif";
     contactus2.src = "images/subnav_contactus_on.gif";
     resources1.src = "images/subnav_resources_off.gif";
     resources2.src = "images/subnav_resources_on.gif";
	 

}
function off(imgName) {
        if(document.images)
        document[imgName].src = eval(imgName + '1.src');
}
function on(imgName) {
        if(document.images)
        document[imgName].src = eval(imgName + '2.src');
}


function hiLite(imgDocID, imgObjName) {
    if (document.images) {
		document.images[imgDocID].src = eval(imgObjName + ".src");
	}
}