var imgOverAbout = new Image();
			var imgOverSoftware = new Image();
			var imgOverWebsites = new Image();
			var imgOverContact = new Image();

			var imgNormAbout = new Image();
			var imgNormSoftware = new Image();
			var imgNormWebsites = new Image();
			var imgNormContact = new Image();

			imgOverAbout.src ="images/aboutButton_h.jpg";
			imgOverSoftware.src ="images/softwareButton_h.jpg";
			imgOverWebsites.src ="images/websitesButton_h.jpg";
			imgOverContact.src ="images/contactUsButton_h.jpg";

			imgNormAbout.src ="images/aboutButton.jpg";
			imgNormSoftware.src ="images/softwareButton.jpg";
			imgNormWebsites.src ="images/websitesButton.jpg";
			imgNormContact.src ="images/contactUsButton.jpg";

			function rollOverAbout()
			{
				document.getElementById("aboutButton").src = imgOverAbout.src;
			}

			function rollOutAbout()
			{
				document.getElementById("aboutButton").src = imgNormAbout.src;
			}

			function rollOverSoftware()
			{
				document.getElementById("softwareButton").src = imgOverSoftware.src;
			}

			function rollOutSoftware()
			{
				document.getElementById("softwareButton").src = imgNormSoftware.src;
			}

			function rollOverWebsites()
			{
				document.getElementById("websitesButton").src = imgOverWebsites.src;
			}

			function rollOutWebsites()
			{
				document.getElementById("websitesButton").src = imgNormWebsites.src;
			}

			function rollOverContact()
			{
				document.getElementById("contactButton").src = imgOverContact.src;
			}

			function rollOutContact()
			{
				document.getElementById("contactButton").src = imgNormContact.src;
			}