function isValidEmailAddress(str) {
   return (str.indexOf(".") > 0) && (str.indexOf("@") > 0);
}

// as convenient a place as any to store this...
var STD_ERROR_PREFIX = "Por favor verifique los valores de los siguientes campos y vuelva a intentarlo:\n\n"

// push is a quite useful method of arrays in newer 
// javascript implementations, but not in ie5-
Array.prototype.push = function(v) {
	this[this.length] = v
	return v
}