if (document.images) { // Preloading Buttons
		    mtcon = new Image(150,24);
			mtcon.src = "../images/buttons/btnmtc_r.gif";
			mtcoff = new Image(150,24);
			mtcoff.src = "../images/buttons/btnmtc_d.gif";
			classaon = new Image(150,24);
			classaon.src = "../images/buttons/btnclassa_r.gif";
			classaoff = new Image(150,24);
			classaoff.src = "../images/buttons/btnclassa_d.gif";
			classcon = new Image(150,21);
			classcon.src = "../images/buttons/btnclassc_r.gif";
			classcoff = new Image(150,21);
			classcoff.src = "../images/buttons/btnclassc_d.gif";
			travelon = new Image(150,23);
			travelon.src = "../images/buttons/btntt_r.gif";
			traveloff = new Image(150,23);
			traveloff.src = "../images/buttons/btntt_d.gif";
			fifthon = new Image(150,22);
			fifthon.src = "../images/buttons/btnfw_r.gif";
			fifthoff = new Image(150,22);
			fifthoff.src = "../images/buttons/btnfw_d.gif";
			usedaon = new Image(150,24);
			usedaon.src = "../images/buttons/btnclassa_r.gif";
			usedaoff = new Image(150,24);
			usedaoff.src = "../images/buttons/btnclassa_d.gif";
			usedcon = new Image(150,21);
			usedcon.src = "../images/buttons/btnclassc_r.gif";
			usedcoff = new Image(150,21);
			usedcoff.src = "../images/buttons/btnclassc_d.gif";
			usedtravelon = new Image(150,23);
			usedtravelon.src = "../images/buttons/btntt_r.gif";
			usedtraveloff = new Image(150,23);
			usedtraveloff.src = "../images/buttons/btntt_d.gif";
			usedfifthon = new Image(150,22);
			usedfifthon.src = "../images/buttons/btnfw_r.gif";
			usedfifthoff = new Image(150,22);
			usedfifthoff.src = "../images/buttons/btnfw_d.gif";
			tenton = new Image(150,22);
			tenton.src = "../images/buttons/btntent_r.gif";
			tentoff = new Image(150,22);
			tentoff.src = "../images/buttons/btntent_d.gif";
			camperon = new Image(150,22);
			camperon.src = "../images/buttons/btncampers_r.gif";
			camperoff = new Image(150,22);
			camperoff.src = "../images/buttons/btncampers_d.gif";
			vanon = new Image(150,21);
			vanon.src = "../images/buttons/btnvans_r.gif";
			vanoff = new Image(150,21);
			vanoff.src = "../images/buttons/btnvans_d.gif";
			homeon = new Image(127,24);
			homeon.src = "../images/buttons/btnhome_r.gif";
			homeoff = new Image(127,24);
			homeoff.src = "../images/buttons/btnhome_d.gif";
			abouton = new Image(219,24);
			abouton.src = "../images/buttons/btnaboutus_r.gif";
			aboutoff = new Image(219,24);
			aboutoff.src = "../images/buttons/btnaboutus_d.gif";
			contacton = new Image(178,24);
			contacton.src = "../images/buttons/btncontact_r.gif";
			contactoff = new Image(178,24);
			contactoff.src = "../images/buttons/btncontact_d.gif";
			otheron = new Image(178,24);
			otheron.src = "../images/buttons/btnother_r.gif";
			otheroff = new Image(178,24);
			otheroff.src = "../images/buttons/btnother_d.gif";
		}
				function rollOver(imgName) {
		if(document.images){
		//alert(imgName);
		imgOn = eval(imgName + "on.src")// "Eval" allows us to evaluate a line of text as a Javascript command.
		//alert (imgOn); // Just testing
		document[imgName].src = imgOn;
		}	
		}
		
		function rollOff(imgName) {
		if(document.images){
		imgOff = eval(imgName + "off.src")// "Eval" allows us to evaluate a line of text as a Javascript command.
		//alert (imgOn); // Just testing
		document[imgName].src = imgOff;
		}	
		}