function init() {  
	if(document.getElementById) {
		layerRef="document.getElementById";
		styleSwitch=".style";
		what="dom1"; 
	} else if (document.layers) {  
		layerRef="document.layers";  
		styleSwitch="";  
		what ="ns4";  
	} else if(document.all) { 
		layerRef="document.all";
		styleSwitch=".style";
		what ="ie4";  
	} else {
		what="none";
		newbrowser = false;
	}
	check = true;
}

function showHide(layerName,total) {
if (check) {
	if (what =="none") return;
	else if (what=="dom1") {
		for (i = 0; i < total; i++)
		{
			hidelayer('div' + i)
		} 
		if(document.getElementById(layerName).style.display != 'none') 
			document.getElementById(layerName).style.display='none';
		else document.getElementById(layerName).style.display='block';
	} 
	else {
		if (eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.display')=='')
			eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.display="none"');
		else eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.display=""');
	}
	} return;
}

function hidelayer(layerName) {
	if(check) {
		if (what=="none") return;
		else if (what=="dom1") document.getElementById(layerName).style.display="none"; 
		else eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.display="none"'); 
	}  
	return;
}