function findObj(theObj, theDoc)
{
  var p, i, foundObj;

  if(!theDoc) theDoc = document;
  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
  {
    theDoc = parent.frames[theObj.substring(p+1)].document;
    theObj = theObj.substring(0,p);
  }
  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
  for (i=0; !foundObj && i < theDoc.forms.length; i++)
    foundObj = theDoc.forms[i][theObj];
  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++)
    foundObj = findObj(theObj,theDoc.layers[i].document);
  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);

  return foundObj;
}

function ShowMenuTrvs(){

	var obj;
	obj=findObj('tabtrvs_top');
	obj.style.visibility='visible';
	obj=findObj('tabtrvs_bot');
	obj.style.visibility='visible';
}
function SwapZIndex(theheight){
	var obj;
	obj=findObj('bandeau_top');
	obj.style.height=theheight+'px';
}

function httpRequest() {
   var http_request = null;
   if (window.XMLHttpRequest) { // Mozilla, Safari, ...
       http_request = new XMLHttpRequest();
       if (http_request.overrideMimeType) http_request.overrideMimeType('text/xml');
   } else if (window.ActiveXObject) { // IE
       try {
           http_request = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (e) {
           try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
           } catch (e) {}
       }
   }
   return http_request;
}