function RevisaFrame(){
if (top.location == self.location)top.location = location.href='index.htm'; 
}

function ismaxlength(obj){
var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
if (obj.getAttribute && obj.value.length>mlength)
obj.value=obj.value.substring(0,mlength)
}

function maximaLongitud(texto,maxlong) { 
  var tecla, in_value, out_value; 

  if (texto.value.length > maxlong) { 
    in_value = texto.value; 
    out_value = in_value.substring(0,maxlong); 
    texto.value = out_value; 
    //alert("Su mensaje debe tener maximo"+ maxlong+" carcateres");
    return false; 
  } 
  return true; 
}


function actucap(){		
	var obj=document.getElementById("cap");
	if (!obj) 
	obj=window.document.all.cap;
	if (obj){
		obj.src= "captcha.php?"+ Math.random();
	}
}