// Mostrar Div Oculto
function showHideDiv(intro,mas)
    {
        var divstyleintro = new String();
		divstyleintro = document.getElementById(intro).style.visibility;
			
        if(divstyleintro.toLowerCase()=="visible" || divstyleintro == "")
        {
           document.getElementById(intro).style.visibility = "hidden"; 
		    document.getElementById(intro).style.display = "none" 
			document.getElementById(mas).style.display = "" 
   		   document.getElementById(mas).style.visibility = "visible";
			        }
        else
        {
			 document.getElementById(intro).style.visibility = "visible";
			 document.getElementById(intro).style.display = ""
			 document.getElementById(mas).style.display = "none" 
            document.getElementById(mas).style.visibility = "hidden";
        }
    }