var imageName=null
	if (document.images){
		aboutusup = new Image();
		aboutusup.src = "images/aboutus_off.gif";
		aboutusdown = new Image();
		aboutusdown.src = "images/aboutus_on.gif";

		suiteofservicesup = new Image();
		suiteofservicesup.src = "images/suiteofservices_off.gif";
		suiteofservicesdown = new Image();
		suiteofservicesdown.src = "images/suiteofservices_on.gif";

		contactusup = new Image();
		contactusup.src = "images/contactus_off.gif";
		contactusdown = new Image();
		contactusdown.src = "images/contactus_on.gif";


			}

		function changeTo(imageName){
			if (document.images){
				if (imageName=="aboutus") document[imageName].src = aboutusdown.src;
				if (imageName=="suiteofservices") document[imageName].src = suiteofservicesdown.src;
				if (imageName=="contactus") document[imageName].src = contactusdown.src;

				}
			}

		function changeBack(imageName){
			if (document.images){
				if (imageName=="aboutus") document[imageName].src = aboutusup.src;
				if (imageName=="suiteofservices") document[imageName].src = suiteofservicesup.src;
				if (imageName=="contactus") document[imageName].src = contactusup.src;

				}
			}