function show_advs( data )
{
	textfield  = document.getElementById("motcle");
	textvalue  = textfield.value;
	textfield2 = document.getElementById("cb");
	textvalue2 = textfield2.value;
	layer 	   = document.getElementById("advsearch_layer");
	
	if(data == "hide")
	{
		if(textvalue == "" && textvalue2 !== "")
		{
			layer.style.display = "none";
			layer.style.visibility = "hidden";
		}
		else
		{
			layer.style.display = "block";
			layer.style.visibility = "visible";
		}
	}
	else if(data == "show")
	{
		layer.style.display = "block";
		layer.style.visibility = "visible";
	}
}