if (document.images) {
//main nav
	nav1 = new Image;		nav1a = new Image;
	nav2 = new Image;		nav2a = new Image;
	nav3 = new Image;		nav3a = new Image;
		
	nav1.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav1.jpg"; 
	nav1a.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav1a.jpg";
	nav2.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav2.jpg"; 
	nav2a.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav2a.jpg";
	nav3.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav3.jpg"; 
	nav3a.src = "http://www.workforcehousingnh.com/extranet/gfx/extranet_nav3a.jpg";
		
		
function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src= eval(newImg + ".src")
		}
	}
}