<!-- 
function Browser() { 
  var ua, s, i; 
  this.isIE    = false;  // Internet Explorer
  this.isNS    = false;  // Netscape
  this.version = null;

  ua = navigator.userAgent;

  s = "MSIE";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as NS 6.1. 
  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();
 
function openSubMenu() {

	if (browser.isIE){
	    var menuMasterCard = document.getElementById("menuMasterCard");
    	menuMasterCard.style.visibility = "visible";

    	menuMasterCard.style.zIndex = "100";
    	}
    else
  		document.layers["menuMasterCard"].visibility = "show";  
}
function closeSubMenu() { 
	if (browser.isIE)
 	   document.getElementById("menuMasterCard").style.visibility = "hidden";
    else
  	  document.layers["menuMasterCard"].visibility = "hide"; 
} 
//-->