var agt = navigator.userAgent.toLowerCase();
		var isMac = (agt.indexOf('mac') != -1);
		var isOpera = (agt.indexOf("opera") != -1);
		var IEver = parseInt(agt.substring(agt.indexOf('msie ') + 5));
		var isIE = ((agt.indexOf('msie')!=-1 && !isOpera && (agt.indexOf('webtv')==-1)) && !isMac);
		var isIE5win = (isIE && IEver == 5);
		var isIE5mac = ((agt.indexOf("msie") != -1) && isMac);
		
		var CurrentDiv = null;
		
		/*
		function SelectVisible(elem,state) {
			i=1;
			if (state=='block') v ='hidden'; else v = 'visible';
			while (select = document.getElementById(elem+i))
			{
				if (isIE||isIE5win)
					if (select) select.style.visibility=v;
				i++;
			}
		}
		*/
		//v4.01
		function findObj(n,d) 
		{ 
		  //return document.getElementById(n);
		  var p,i,x;  
		  if(!d) d=document; 
		  if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		  if(!(x=d[n])&&d.all) x=d.all[n]; 
		  for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
		  if(!x && d.getElementById) x=d.getElementById(n); 
		  return x;
		}
		function DisplayMenu(objName) 
		{ 
			//if(CurrentDiv==objName) { changeProp(objName,'','style.display','none'); CurrentDiv=null; }
			if(!CurrentDiv || CurrentDiv!=objName) { changeProp(objName,'','style.display','block'); CurrentDiv=objName; }
			/*findObj(objName).style.display='block';*/ 
		}
		function EraseMenu() { if(CurrentDiv) changeProp(CurrentDiv,'','style.display','none'); CurrentDiv=null; /*findObj(objName).style.display='none';*/ }
		//v6.0
		function changeProp(objName,x,theProp,theValue) 
		{
			//return;
		  var obj = findObj(objName);
		  if (obj && (theProp.indexOf("style.")==-1 || obj.style))
		  {
			if (theValue == true || theValue == false) eval("obj."+theProp+"="+theValue);
			else eval("obj."+theProp+"='"+theValue+"'");
		  }
		  //if(objName!='un') TestchangeProp('un');
		  if(objName!='deux') TestchangeProp('deux');
		  if(objName!='trois') TestchangeProp('trois');
		  if(objName!='quatre') TestchangeProp('quatre');
		  // opacity(objName, 0, 100, 300);
		}
		function TestchangeProp(objName)
		{
			var obj = findObj(objName);
			obj.style.display='none';
		}