/*
function setmenu(itemid)
{	
    var menu = document.getElementById(itemid); 
	if(menu)
    {
        menu.onmouseout=null;
		menu.onmouseover=null; 
        menu.src='img/bo_'  +itemid + '_on.gif';
    }
}

function setsubmenu(itemid)
{
    var menu = document.getElementById(itemid); 
    if(menu)
        if((menu.parentNode)&&(menu.parentNode.tagName=="A"))
        {
            menu.parentNode.className="ON";
        }
        else
        {
           menu.className="ON";
        }
}

function abreventana(){
	void(window.open('amplia1.php','amplia','width=768,height=590, status=yes, directories=no, toolbar=yes, location=no, menubar=no,scrollbars=no, resizable=no'));	
}
*/
function validaformulario(form){
  var errores = 0;
  for(var i=0; i < form.length; i++) 
  {
	 if(form[i].tagName=="FIELDSET") continue;
     //	alert(form[i].tagName);	 
     form[i].className = (form[i].value=="") ? "error" : "";
	 if(form[i].value=="") errores++;
  }
  var errordiv = document.getElementById("errorDesc");
  if (errordiv) {
    errordiv.style.display = (errores>0) ? "" : "none";
  }
  return (errores==0);
}