function mostraMenu(menuX) {
	       if (document.getElementById) {
	           questoMenu = document.getElementById(menuX).style
	           if (questoMenu.display == "block") {
	               questoMenu.display = "none"
	           }
	           else {
	               questoMenu.display = "block"
	           }
	           return false
	       }
	       else {
	           return true
	       }
	   }