function toggleElement(whichLayer){
	if (document.getElementById){
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style2.display? "":"none";
	}else if (document.all){
		var style2 = document.all[whichLayer].style;
		style2.display = style2.display? "":"none";
	}else if (document.layers){
		var style2 = document.layers[whichLayer].style;
		style2.display = style2.display? "":"none";		
	}
}

function setOpacity(obj, opacity){
	opacity = (opacity == 100)?99.999:opacity;
	obj.style.filter = "alpha(opacity:"+opacity+")";
	obj.style.KHTMLOpacity = opacity/100;
	obj.style.MozOpacity = opacity/100;
	obj.style.opacity = opacity/100;
}