function toggleLang()
	    {
	    var  currentPage = document.location.href;

	      if((currentPage.indexOf("Lang=E") > 0) || (currentPage.indexOf("Lang=E") > 0)){ 
			target = currentPage.replace("Lang=E", "Lang=F");
			target = target.replace("Lang=E", "Lang=F");
		  }
		  else if((currentPage.indexOf("Lang=F") > 0) || (currentPage.indexOf("Lang=F") > 0)){ 
			target = currentPage.replace("Lang=F", "Lang=E");
			target = target.replace("Lang=F", "Lang=E");
		  }
		  else if(currentPage.indexOf("?") > 0){
			target =  currentPage + "&Lang=F"
		  }
		  else{
			target =  currentPage + "?Lang=E"
		  }	
	      document.location.href = target;     

      }