if (document.images){



img1on = new Image();
img1on.src = "images/btn_services_on.gif"
img1off = new Image();
img1off.src = "images/btn_services_off.gif"

img2on = new Image();
img2on.src = "images/btn_clients_on.gif"
img2off = new Image();
img2off.src = "images/btn_clients_off.gif";

img3on = new Image();
img3on.src = "images/btn_portfolio_on.gif"
img3off = new Image();
img3off.src = "images/btn_portfolio_off.gif"

img4on = new Image();
img4on.src = "images/btn_estimates_on.gif"
img4off = new Image();
img4off.src = "images/btn_estimates_off.gif"

img5on = new Image();
img5on.src = "images/btn_employment_on.gif"
img5off = new Image();
img5off.src = "images/btn_employment_off.gif"

img6on = new Image();
img6on.src = "images/btn_about_on.gif"
img6off = new Image();
img6off.src = "images/btn_about_off.gif"

img6aon = new Image();
img6aon.src = "images/btn_links_on.gif"
img6aoff = new Image();
img6aoff.src = "images/btn_links_off.gif"

img7on = new Image();
img7on.src = "images/btn_contact_on.gif"
img7off = new Image();
img7off.src = "images/btn_contact_off.gif"

}


function imgSwap(imgName,imgFile)  { 
	if(document.images){ 
        document.images[imgName].src = eval (imgFile + ".src");
		}
		}

		
function popup(what,width,height) {
        msgWindow=window.open(what,"NameofWindow","toolbar=no,directories=no,status=no,scrollbars=yes,resize=no,menubar=no,width=" + width + ",height=" + height)
        if (((navigator.appName=="Netscape") && ((navigator.appVersion).charAt(0) > 2))) {
                msgWindow.focus()
        }
}