var NS = (navigator.appName.indexOf("Netscape") != -1);
var IE = (navigator.appName.indexOf("Microsoft") != -1);

function popup(myurl,h,w,x,y,s,t,m)
{
	if(! h){h = 400;}
	if(! w){w = 400;}
	if(! s){s = 'no';}
	if(! t){t = 'no';}
	if(! m){m = 'no';}

	if(! x )
	{
		x = Math.round( (screen.width - w) / 2 );
	}

	if(! y )
	{
		y = Math.round( (screen.height - h) / 2 );
	}

	var param = "height=" + h + ",width=" + w + ",";
	
	if(NS)
	{
	   param += "screenX=" + x + ",screenY=" + y + ",location=no,toolbar=" + t + ",resizable=no,scrollbars=" + s + ",status=yes,menubar=" + m;
	}
	else
	{
	   param += "left=" + x + ",top=" + y + ",location=no,toolbar=" + t + ",resizable=no,scrollbars=" + s + ",status=yes,menubar=" + m;
	}

	if( window.opener )
	{
		var newname = window.opener.name + "_new";
	}
	else
	{
		var newname = "newwin";
	}
	nw = window.open(myurl,newname,param);

}