var ie45,ns6,ns4,dom;
if (navigator.appName=="Microsoft Internet Explorer")
{
	ie45=parseInt(navigator.appVersion)>=4;
}
else if (navigator.appName=="Netscape")
{
	ns6=parseInt(navigator.appVersion)>=5;
	ns4=parseInt(navigator.appVersion)<5;
}
dom=ie45 || ns6;

function showhide(id)
{
	el = document.all ? document.all[id] : 
	dom ? document.getElementById(id) : 
	document.layers[id];
	els = dom ? el.style : el;
	if (dom)
	{
		if (els.visibility == "hidden")
		{
			els.display = "block";
			els.visibility = "visible";
		}
		else
		{	
			els.display = "none";
			els.visibility = "hidden";
		}
	}
	else if (ns4)
	{
		if (els.visibility == "show")
		{
			els.visibility = "hide";
			els.display = "none";
		}
		else 
		{
			els.visibility = "show";
			els.diplay = "block";
		}
	}
}