var capa1
var capa2
var capa3
var capa4
var capa5
var capa6
var capa7
var capa8
var capa9
var capa10
var capa11
var capa12
var capa13
var capa14
var capa15
var capa16
var capa17
var capa18
var capa19
var capa20
var capa21
var capa22

ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false

function init() {
   if (ns4) {
                 capa1 = document.menu1;
	 capa2 = document.menu2;
	 capa3 = document.menu3;
	 capa4 = document.menu4;
	 capa5 = document.menu5;
	 capa6 = document.menu6;
	 capa7 = document.menu7;
	 capa8 = document.menu8;
	 capa9 = document.menu9;
	 capa10 = document.menu10;
	 capa11 = document.menu11;
	 capa12 = document.menu12;
	 capa13 = document.menu13;
	 capa14 = document.menu14;
	 capa15 = document.menu15;
	 capa16 = document.menu16;
	 capa17 = document.menu17;	 
	 capa18 = document.menu18;
	 capa19 = document.menu19;
	 capa20 = document.menu20;
 	 capa21 = document.menu21;
	 capa22 = document.menu22;
  }	 

 if (ie4) {
	   capa1 = menu1.style;
  	   capa2 = menu2.style;
	   capa3 = menu3.style;	
	   capa4 = menu4.style;
	   capa5 = menu5.style;
	   capa6 = menu6.style;
	   capa7 = menu7.style;
	   capa8 = menu8.style;
	   capa9 = menu9.style;
	   capa10 = menu10.style;
 	   capa11 = menu11.style;
	   capa12 = menu12.style;
	   capa13 = menu13.style;
	   capa14 = menu14.style;
	   capa15 = menu15.style;
	   capa16 = menu16.style;
	   capa17 = menu17.style;
	   capa18 = menu18.style;
	   capa19 = menu19.style;
	   capa20 = menu20.style;
	   capa21 = menu21.style;
	   capa22 = menu22.style;
   }
}

function muestra(obj) {

 if (ns4) obj.visibility = "show"
 else if (ie4) obj.visibility = "visible"

}

function oculta(obj) {
 if (ns4) obj.visibility = "hide"
 else if (ie4) obj.visibility = "hidden"

}