var buttonOn = 0;

	cache1on = new Image(); 
	cache1on.src = "images/gallery_on.gif";
	cache2on = new Image(); 
	cache2on.src = "images/resume_on.gif";
	cache3on = new Image(); 
	cache3on.src = "images/contact_on.gif";
	cache4on = new Image(); 
	cache4on.src = "images/exhibitions_on.gif";
	cache5on = new Image(); 
	cache5on.src = "images/commissions_on.gif";
	
	
	cache1off = new Image(); cache1off.src = "images/gallery_off.gif";
	cache2off = new Image(); cache2off.src = "images/resume_off.gif";
	cache3off = new Image(); cache3off.src = "images/contact_off.gif";
	cache4off = new Image(); cache4off.src = "images/exhibitions_off.gif";
	cache5off = new Image(); cache5off.src = "images/commissions_off.gif";

	
	function turnOff() {
		document.button1.src=cache1off.src;
		document.button2.src=cache2off.src;
		document.button3.src=cache3off.src;
		document.button4.src=cache4off.src;
		document.button5.src=cache5off.src;

	}

// This function turns buttons on

function glowOn(buttNum) {
	if (buttNum==1 && buttonOn !=1) {
		document.button1.src = cache1on.src;
	}
	if (buttNum==2  && buttonOn !=2) {
		document.button2.src=cache2on.src;
	}
	if (buttNum==3  && buttonOn !=3) {
		document.button3.src=cache3on.src;
	}
	if (buttNum==4  && buttonOn !=4) {
		document.button4.src=cache4on.src;
	}
	if (buttNum==5  && buttonOn !=5) {
		document.button5.src=cache5on.src;
	}



}

function glowOff(buttNum) {             
if (buttNum==1 && buttonOn !=1) {            
document.button1.src=cache1off.src;
}
if (buttNum==2  && buttonOn !=2) {
document.button2.src=cache2off.src;
}
if (buttNum==3  && buttonOn !=3) {
document.button3.src=cache3off.src;
}
if (buttNum==4  && buttonOn !=4) {
document.button4.src=cache4off.src;
}
if (buttNum==5  && buttonOn !=5) {
document.button5.src=cache5off.src;
}



}
function turnOn(buttNum) {           
turnOff();
if (buttNum==1){
document.button1.src=cache1on.src;
}
if (buttNum==2){
document.button2.src=cache2on.src;
}
if (buttNum==3){
document.button3.src=cache3on.src;
}
if (buttNum==4){
document.button4.src=cache4on.src;
}
if (buttNum==5){
document.button5.src=cache5on.src;
}


buttonOn=buttNum;
}



function MM_openBrWindow(theURL,winName,features) { //v1.0
window.open(theURL,winName,features);
}