if (document.layers) { 
		layerRef=".layers[";
		styleRef="]";
		}
		else if (document.all) { 
		layerRef=".all[";
		styleRef="].style";
		}
		else if (document.getElementById) { 
		layerRef=".getElementById(";
		styleRef=").style";
		}
		function toonuit(myitem,hoofd)
		{	
		eval
		("document"+layerRef+"'"+myitem+"'"+styleRef+".display='block'");
		eval
		("document"+layerRef+"'"+myitem+"'"+styleRef+".backgroundImage='url(images/uitklaphoekje.gif)'");
		}
		function weguit(myitem,hoofd)
		{
		eval ("document"+layerRef+"'"+myitem+"'"+styleRef+".display='none'");
		eval
		("document"+layerRef+"'"+myitem+"'"+styleRef+".backgroundImage='none'");
		}