function showdiv(menu,x,y) {
                        hidediv();
                        document.getElementById(menu).style.left = x+'px';
                        document.getElementById(menu).style.top = y+'px';
                        document.getElementById(menu).style.visibility = 'visible';
                        document.getElementById("ocultar").style.visibility = 'visible';
            }
            //funcion que oculta los menus flotantes
            function hidediv() { 
                        document.getElementById("menu1").style.visibility = 'hidden';
                        document.getElementById("menu2").style.visibility = 'hidden';
                        document.getElementById("menu3").style.visibility = 'hidden';
                        document.getElementById("menu4").style.visibility = 'hidden';
                        document.getElementById("menu5").style.visibility = 'hidden';
						document.getElementById("menu6").style.visibility = 'hidden';
                        document.getElementById("ocultar").style.visibility = 'hidden';
            }