function turnOn(imgName) {
	if (document.images) {
		hiLiteImage = eval(imgName + "On.src");
		document [imgName].src = hiLiteImage
		}
	}
	
function turnOff(imgName) {
	if (document.images) {
		originalImage = eval(imgName + "Off.src")
		document [imgName].src = originalImage
		}
	}

if(document.images) {
		
	homepageOn = new Image(81, 19);
	homepageOn.src = "images/btm1_on.gif";
	homepageOff = new Image(81, 19);
	homepageOff.src = "images/btm1_of.gif";

	aboutusOn = new Image(68, 19);
	aboutusOn.src = "images/btm2_on.gif";
	aboutusOff = new Image(68, 19);
	aboutusOff.src = "images/btm2_of.gif";

	usefullinksOn = new Image(83, 19);
	usefullinksOn.src = "images/btm3_on.gif";
	usefullinksOff = new Image(83, 19);
	usefullinksOff.src = "images/btm3_of.gif";

	contactOn = new Image(63, 19);
	contactOn.src = "images/btm4_on.gif";
	contactOff = new Image(63, 19);
	contactOff.src = "images/btm4_of.gif";

<!-- start of switches---------------------------------->

	button1On = new Image(6, 6);
	button1On.src = "images/switchon.gif";
	button1Off = new Image(6, 6);
	button1Off.src = "images/switchof.gif";
		
	button2On = new Image(6, 6);
	button2On.src = "images/switchon.gif";
	button2Off = new Image(6, 6);
	button2Off.src = "images/switchof.gif";

	button3On = new Image(6, 6);
	button3On.src = "images/switchon.gif";
	button3Off = new Image(6, 6);
	button3Off.src = "images/switchof.gif";
		
	button4On = new Image(6, 6);
	button4On.src = "images/switchon.gif";
	button4Off = new Image(6, 6);
	button4Off.src = "images/switchof.gif";		

	button5On = new Image(6, 6);
	button5On.src = "images/switchon.gif";
	button5Off = new Image(6, 6);
	button5Off.src = "images/switchof.gif";

	button6On = new Image(6, 6);
	button6On.src = "images/switchon.gif";
	button6Off = new Image(6, 6);
	button6Off.src = "images/switchof.gif";

	button7On = new Image(6, 6);
	button7On.src = "images/switchon.gif";
	button7Off = new Image(6, 6);
	button7Off.src = "images/switchof.gif";

	button8On = new Image(6, 6);
	button8On.src = "images/switchon.gif";
	button8Off = new Image(6, 6);
	button8Off.src = "images/switchof.gif";

	button9On = new Image(6, 6);
	button9On.src = "images/switchon.gif";
	button9Off = new Image(6, 6);
	button9Off.src = "images/switchof.gif";

	button10On = new Image(6, 6);
	button10On.src = "images/switchon.gif";
	button10Off = new Image(6, 6);
	button10Off.src = "images/switchof.gif";

	button11On = new Image(6, 6);
	button11On.src = "images/switchon.gif";
	button11Off = new Image(6, 6);
	button11Off.src = "images/switchof.gif";

	button12On = new Image(6, 6);
	button12On.src = "images/switchon.gif";
	button12Off = new Image(6, 6);
	button12Off.src = "images/switchof.gif";

	button13On = new Image(6, 6);
	button13On.src = "images/switchon.gif";
	button13Off = new Image(6, 6);
	button13Off.src = "images/switchof.gif";

	button14On = new Image(6, 6);
	button14On.src = "images/switchon.gif";
	button14Off = new Image(6, 6);
	button14Off.src = "images/switchof.gif";

	button15On = new Image(6, 6);
	button15On.src = "images/switchon.gif";
	button15Off = new Image(6, 6);
	button15Off.src = "images/switchof.gif";
	}