if (document.images)
{
homeoff=new Image();
homeoff.src="images/home_buttona.gif";
homeon=new Image();
homeon.src="images/home_buttonb.gif";

hostingoff=new Image();
hostingoff.src="images/webhosting_buttona.gif";
hostingon=new Image();
hostingon.src="images/webhosting_buttonb.gif";

designoff=new Image();
designoff.src="images/webdesign_buttona.gif";
designon=new Image();
designon.src="images/webdesign_buttonb.gif";

aboutoff=new Image();
aboutoff.src="images/aboutus_buttona.gif";
abouton=new Image();
abouton.src="images/aboutus_buttonb.gif";

contactoff=new Image();
contactoff.src="images/contactus_buttona.gif";
contacton=new Image();
contacton.src="images/contactus_buttonb.gif";

}
function turnOn (imageName) {
	if (document.images) {
	   document[imageName].src=eval(imageName + "on.src");
            }
}
function turnOff (imageName) {
	if (document.images) {
	   document[imageName].src=eval(imageName + "off.src");
            }
}