//----------- function cacheLayer(_layerName)	
		
function cacheLayer(_layerName)
{
			var calc = document.getElementById(_layerName);
			var masquer = document.getElementById(_layerName+"_masquer");
			var voir = document.getElementById(_layerName+"_voir");
			if(!calc) 
			{
				return;
			}
	
			if (calc.style.display=='block')
			{
				calc.style.display='none';
				masquer.style.display='none';
				voir.style.display='block';					
			}			
}		
//------------------------------------------------------------------------------------- function cacheLayer(_layerName)

//------------------------------------------------------------------------------------- function afficheLayer(_layerName)

		
function isNetscape4() 
{
			ns4 = (document.layers) ? true : false;
			return ns4;
}
		
function isOtherBrowser() 
{
			other = (document.getElementById) ? true : false;
			return other;
}

//afficher les "masquer les critères"
function afficheLayer(_layerName)
{

			
				if (isNetscape4())
				{
					calc=document.layers[_layerName];
					masquer=document.layers[_layerName+"_masquer"];
					voir=document.layers[_layerName+"_voir"];
					if (calc.visibility=='hidden')
					{
						calc.visibility='visible';
					}
				} 
				else if (isOtherBrowser())
				{
					var calc = document.getElementById(_layerName);
					var masquer = document.getElementById(_layerName+"_masquer");
					var voir = document.getElementById(_layerName+"_voir");
					if (calc.style.display=='none')
					{
						calc.style.display='block';
						masquer.style.display='block';
						voir.style.display='none';		
					}
				}				
}