var ArrLayer = new Array("layer1","layer1_Deux","layer2","layer2_1","layer2_2","layer2_3","layer3")
	var ie=document.all;
	var ns4=document.layers;

	function showlayer(){
		if (document.all) //ie
	   {
	       for (i=0;i<ArrLayer.length;i++)
	        {
	            document.all[ArrLayer[i]].style.visibility = 'hidden';
	        }
			if(showlayer.arguments.length != 0)
			{
				for (i=0;i<showlayer.arguments.length;i++)
				{
					document.all[showlayer.arguments[i]].style.visibility = 'visible';
				}
						
			}
		    ie['cache01'].style.visibility = 'visible';
			ie['cache02'].style.visibility = 'visible';
		 }		
		 
		 
	    else if(document.getElementById) //netscape6
	     {
	     	for (i=0;i<ArrLayer.length;i++)
	        {
	            document.getElementById(ArrLayer[i]).style.visibility = 'hidden';
	        }
			if(showlayer.arguments.length != 0)
			{
				for (i=0;i<showlayer.arguments.length;i++)
				{
					document.getElementById(showlayer.arguments[i]).style.visibility = 'visible';
				}
			}
			
			document.getElementById('cache01').style.visibility = 'visible';
			document.getElementById('cache02').style.visibility = 'visible';	
		}  
	     else if (document.layers) //netscape 4 et -
	     {
	        for (i=0;i<ArrLayer.length;i++)
	        {
	            document.layers[ArrLayer[i]].visibility = 'hidden';
	        }
			if(showlayer.arguments.length != 0)
			{
				for (i=0;i<showlayer.arguments.length;i++)
				{
					document.layers[showlayer.arguments[i]].visibility = 'visible';
				}
			}
			ns4['cache01'].visibility = 'visible';
			ns4['cache02'].visibility = 'visible';	
		}
	}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}

function cache(statuscache){
	if (statuscache=='on'){
		showlayer('cache01');
		showlayer('cache02');
	}
}

function nuclear( bla )
{
	showlayer();
	//*changeImages('groupe','groupe_off');
		  if (ie){
				ie['cache01'].style.visibility = 'hidden';
				ie['cache02'].style.visibility = 'hidden';
			} else if (ns4) {
				ns4['cache01'].visibility = 'hidden';
				ns4['cache02'].visibility = 'hidden';
			} else if (document.getElementById) {
				document.getElementById('cache01').style.visibility = 'hidden';
				document.getElementById('cache02').style.visibility = 'hidden';	
			}
 // Affichage des calques préselectionnés
		if( arrPresetLayers.length > 0 ){
			for( i=0;i<arrPresetLayers.length;i++ ){
				//alert(ArrDefaultLayer[i]);
				if (ie)
					ie[arrPresetLayers[i]].style.visibility = 'visible';
				else if (ns4)
					ns4[arrPresetLayers[i]].visibility = 'visible';
				else if (document.getElementById)
					document.getElementById(arrPresetLayers[i]).style.visibility = 'visible';
			}
		}
}
function presetLayers(){
		if( arrPresetLayers.length > 0 ){
			for( i=0;i<arrPresetLayers.length;i++ ){
				//alert(ArrDefaultLayer[i]);
				if (ie)
					ie[arrPresetLayers[i]].style.visibility = 'visible';
				else if (ns4)
					ns4[arrPresetLayers[i]].visibility = 'visible';
				else if (document.getElementById)
					document.getElementById(arrPresetLayers[i]).style.visibility = 'visible';
			}
		}
}
//* if (document.images) {
  
//*  groupe_on = new Image();
  //* groupe_on.src = "../medias/img/basics/bt_groupe_on.gif";  
 //*  groupe_off = new Image();
 //* groupe_off.src = "../medias/img/basics/bt_groupe_off.gif";
    
//* }
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}
function popup(url, w, h, sc) {
window.open(url, '', 'resizable=no,scrollbars=' + sc + ',menubar=no,width=' + w + ',height=' + h);
}