function validate_email(email) 
{
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if(reg.test(email) == false) {
      		return false ;
   	} else {
		if(trim(email) != '') {
			return true ;
		} else {
			return false ;
		}
	}
	
}

function trim (myString)
{
	return myString.replace(/^\s+/g,'').replace(/\s+$/g,'')
}