String.prototype.trim = function() {return this.replace(/^\s+|\s+$/g,"");};
String.prototype.empty = function() {return(this.length==0 || this=="")?true:false;};
function isEmpty(element){return (element && element.value.trim() != "")? false:true;}

var regexEmail = /^[a-zA-Z0-9][a-zA-Z0-9-._]+@[a-zA-Z0-9-._]{2,}[.][a-zA-Z]{2,5}$/;
var regexCp = /^[0-9]{5}$/;