function ventanea(url,name,specs){
	var oVentana = window.open(url,name,specs);
}

function largoCapas(){
  try{
    var L1 = document.getElementById('contenedor');
    var L2 = document.getElementById('sombraIzda');
    var L3 = document.getElementById('sombraDcha');
    
    var masAlta = L1;
    if(masAlta.clientHeight < L2.clientHeight){
      masAlta = L2;
    }
    
    L2.style.height = (L1.clientHeight)+'px';
    L3.style.height = (L1.clientHeight)+'px';
  }catch(ex){}
}