var browsert=0;
var layers

function browser()
{
	var name;
	var agent;
	name=navigator.appName;
	agent=navigator.userAgent;
	
	if (name=="Netscape")
	{
		if (agent.indexOf("compatible")>-1)
		{
			if (agent.indexOf("Opera")>-1)
			{
				//Opera 3/4
				browsert=1;
			}
		}
		else
		{
			if (agent.indexOf("Opera")>-1)
			{
				//Opera 5
				browsert=2;
			}
			else
			{
				if (agent.indexOf("Mozilla/5.0")>-1)
				{
					//Netscape 6 oder Mozilla 5.0
					browsert=2;
				}
				else
				{
					//Netscape Communicator
					browsert=1;
				}
			}
		}
	}
	
	if (name=="Microsoft Internet Explorer")
	{
		if (agent.indexOf("Opera")>-1)
		{
			//Opera 5
			browsert=2;
		}
		else
		{
			//IE
			browsert=2;
		}
	}
	
	if (name=="Opera")
	{
		//Opera 5
		browsert=2;
	}
	
	if (browsert==0)
	{
		browser=2;
	}
	
	if (browsert==2) 
	{
		layers=document.getElementsByTagName("DIV");
	}
}

function make_visible(ID)
{
	if (browsert==2)
	{
		layers[ID].style.visibility='visible';
	}
	else
	{
		window.document.layers[ID].visibility='visible';
	}
}

function make_hidden(ID)
{
	if (browsert==2)
	{
		layers[ID].style.visibility='hidden';
	}
	else
	{
		window.document.layers[ID].visibility='hidden';
	}
}