if (navigator.appName=='Netscape' && navigator.appVersion.charAt(0)<<'5')
	{winRef=""
	layerRef=".layers"
	styleRef=""}
	if (navigator.appName=='Netscape' && navigator.appVersion.charAt(0)=='5')
	{winRef="window."
	layerRef=".getElementById("
	styleRef=").style"}
	if (navigator.appName=='Microsoft Internet Explorer')
	{winRef=""
	layerRef=".all"
	styleRef=".style"}


	function showLayerWhere(layername,index,layerX,layerY) {
		myName = layername+"_"+index;
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".visibility='visible'");
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".top="+layerY);
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".left="+layerX);
	}

	function hideLayer(layername,index) {
		myName = layername+"_"+index;
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".visibility='hidden'");
	}

	function hideAllLayer(layername,index,maxindex) {
	    for (k=1;k<=maxindex;k++) {
		myName = layername+"_"+k;
		if (k!=index) {
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".visibility='hidden'");
	    	}
	    }
	}

	function show(layername) {
		myName = layername
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".visibility='visible'");
	}

	function hide(layername) {
		myName = layername;
		eval(winRef+'document'+layerRef+"['"+myName+"']"+styleRef+".visibility='hidden'");
	}