var isDM = (document.getElementById ? true : false);
	var isIE = ((document.all && !isDM) ? true : false);
	var isNS = (document.layers ? true : false);

	if (isDM || isIE) { visible = 'visible'; hidden = 'hidden'; }
	if (isNS) { visible = 'show'; hidden = 'hide'; }
	var divsUsed = 11;
	
	function showMenu (divName,divNumber) 
	    { var divShow = divName + divNumber;
		  var workThis = document.getElementById(divShow);
	      if (isDM || isIE)
	      {var cnt = 0; for (cnt = 1; cnt <= divsUsed; cnt++) 
	       	 {var divCheck = divName + cnt;
			  var wTvar = document.getElementById(divCheck);
	      	  if (isDM || isIE)
			   { if (divCheck == divShow)
			       wTvar.style.visibility = visible;
	             else
			  	   wTvar.style.visibility = hidden;
			   }}}}

	function hideMenu (divName,divNumber) 
	    { var divShow = divName + divNumber;
		  var workThis = document.getElementById(divShow);
	      if (isDM || isIE)
	      {var cnt = 0; for (cnt = 1; cnt <= divsUsed; cnt++) 
	       	{ var divCheck = divName + cnt;
			  var wTvar = document.getElementById(divCheck);
	      	  if ((isDM) && (divCheck == divShow))
			    wTvar.style.visibility = hidden;
	          else 
			    { if (isDM)
					  wTvar.style.visibility = hidden;
				}}}}
	
	function showNSMenu (divName,divNumber) 
		{
	        var cnt = 0; for (cnt = 1; cnt <= divsUsed; cnt++) 
	        {var divCheck = divName + cnt; var divShow = divName + divNumber;
	        if (divCheck == divShow) document.layers[divShow].visibility = visible;
	        else document.layers[divCheck].visibility = hidden;}
		}

	function hideNSMenu (divName,divNumber) 
		{
			var cnt = 0; for (cnt = 1; cnt <= divsUsed; cnt++) 
	        {var divCheck = divName + cnt; var divShow = divName + divNumber;
	        if (divCheck == divShow) document.layers[divShow].visibility = hidden;}
		}

	function showDOM(divName, divNumber)
	 {
	 	if (isDM || isIE)
		  showMenu(divName,divNumber);
		if (isNS)
		  showNSMenu(divName,divNumber);
	 }	
	 
	function hideDOM(divName, divNumber)
	 {
	 	if (isDM || isIE)
		  hideMenu(divName,divNumber);
		if (isNS)
		  hideNSMenu(divName,divNumber);
	 }	
	
	var ver = parseFloat (navigator.appVersion);
	if ((navigator.appName.indexOf ("Netscape") == 0) && (ver >= 4)) {
	} else if ((navigator.appName.indexOf ("Mozilla") == 0) && (ver >= 4)) {
	} else if ((navigator.appName.indexOf ("Microsoft") == 0) && (ver >= 4)) {
	} else {
			alert("Your browser is too old - upgrade!");
			location=history.back();}