function Is ()
{
	var agt=navigator.userAgent.toLowerCase()
	
	this.created = true;
	
	this.major = parseInt(navigator.appVersion)
	this.minor = parseFloat(navigator.appVersion)
	
	this.nav  = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1)
	    && (agt.indexOf('compatible') == -1)))
	this.nav2 = (this.nav && (this.major == 2))
	this.nav3 = (this.nav && (this.major == 3))
	this.nav4 = (this.nav && (this.major == 4))
	
	//Netscape 6
	this.nav5 = (this.nav && (this.major == 5))
	this.nav6 = (this.nav && (this.major == 5))
	this.gecko = (this.nav && (this.major >= 5))
	
	this.ie   = (agt.indexOf("msie") != -1)
	this.ie3  = (this.ie && (this.major == 3))
	this.ie4  = (this.ie && (this.major == 4))
	this.ie5  = (this.ie && (this.major == 5))
	
	
	this.opera = (agt.indexOf("opera") != -1)
	
	this.nav4up = this.nav && (this.major >= 4)
	this.ie4up  = this.ie  && (this.major >= 4)
}

var is = new Is();
loaded=1;

function showpic(lay)
{
if(loaded==0)return false;
	if(is.ie4up) document.all(lay).style.display='block'
	else if(is.gecko) document.getElementById(lay).style.display='block'		
	// else document.layers[lay].visibility='show';
}

function hidepic(lay)
{
if(loaded==0)return false;
	if(is.ie4up)document.all(lay).style.display='none'
	else if(is.gecko) document.getElementById(lay).style.display='none'
	// else document.layers[lay].visibility='hide';
}