function Is() {
var agent = navigator.userAgent.toLowerCase();
this.major = parseInt(navigator.appVersion);
this.minor = parseFloat(navigator.appVersion);
this.ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
this.ns4 = (this.ns && (this.major >= 4));
this.ie = (agent.indexOf("msie") != -1);
this.ie4 = (this.ie && (this.major >= 4));
}

var is=new Is();


if (is.ns4) {n=1;ie=0;fShow="show";   fHide="hide";}
if (is.ie4)    {n=0;ie=1;fShow="visible";fHide="hidden";}

// ns = navigator.appName == "Netscape";

function show( xx )
	{
	
	if (n)
		{
		document[xx].visibility=fShow;
		}
	else
		{
		document.all[xx].style.visibility=fShow;
		}
	focus();
	}


function hide( xx )
	{
	if (n)
		{
		document[xx].visibility=fHide;
		}
	else
		{
		document.all[xx].style.visibility=fHide;
		}
	}