var gloveOn;
	var isDOM = (document.getElementById != null);
	var isNS4 = (document.layers != null);
	var isIE = (document.all != null);
	var tmOut = '';
	
	function showNav(nav, no, img) {
		if (gloveOn && nav!='products') hideGloves();
		
		if (nav=='products') {
			gloveOn = true;
			showGlove('menu1');
		}
		
		if (nav=='heritage') {
			gloveOn = true;
			showGlove('menu2');
		}
		if (nav=='news') {
			gloveOn = true;
			showGlove('menu3');
		}
		if (nav=='resources') {
			gloveOn = true;
			showGlove('menu4');
		}	
		
	}
	
	
	function hideGloves() {
		hideGlove('menu1');
		hideGlove('menu2');
		hideGlove('menu3');
		hideGlove('menu4');
		cTm();
	}
	
	function showGlove(layerID) {
		cTm();
		if(isDOM) {
			document.getElementById(layerID).style.visibility = 'visible';
		}
		else if(isNS4) {
			document.layers[layerID].visibility = 'show';
		}
		else if(isIE) {
			document.all(layerID).style.visibility = 'visible';
		}
	}
	
	function hideGlove(layerID) {
		if(isDOM) {
			document.getElementById(layerID).style.visibility = 'hidden';
		}
		else if(isNS4) {
			document.layers[layerID].visibility = 'hidden';
		}
		else if(isIE) {
			document.all(layerID).style.visibility = 'hidden';
		}
	}
	
	function tmHide(){
		cTm();
		tmOut = setTimeout('hideGloves()', 500);
	}
	
	function cTm() {clearTimeout(tmOut);}
	
	function btnSwitch(nav, no) {
	if (no==1) {
		eval('document.' + nav + '.src=\'img/btn' + nav + 'on.gif\'');
	} else {
		eval('document.' + nav + '.src=\'img/btn' + nav + '.gif\'');
	}
}