// JavaScript Document

function space(string) {
while(''+string.charAt(0)==' ')string=string.substring(1,string.length);
while(''+string.charAt(string.length-1)==' ')string=string.substring(0,string.length-1);
return string;
}

function validateEmail(str){
	var emailRegEx = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	//str = document.getElementById('emailAddress').value;
		if(str.match(emailRegEx)){
		  return true;
		}else{
		  return false;
		}
}

function valButton(btn) {
	alert(btn);			
    var cnt = -1;
    for (var i=btn.length-1; i > -1; i--) {
        if (btn[i].checked) {cnt = i; i = -1;}
    }
    if (cnt > -1) return btn[cnt].value;
    else return null;
}