var over;
	
function eraserke()
	{
		over=document.getElementById("magunkrolLayer");
		over.style.visibility="hidden";

		over=document.getElementById("referenciaLayer");
		over.style.visibility="hidden";
	}


function magunkrolChange()
	{
		eraserke();
		over=document.getElementById("magunkrolLayer");
		over.style.visibility="visible";
	}
	
	
function referenciaChange()
	{
		eraserke();
		over=document.getElementById("referenciaLayer");
		over.style.visibility="visible";
	}