//trim helper
String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,'');
}

function checkPasswords(pw1, pw2, isFocus, isNew) {
	//make sure the passwords match
	if(isFocus) {
		return true;
	}
	
	if(pw1 == pw2 && isNew) {
		return true;
	}
	
	if(pw1 != '' || pw2 != '') {
		//alert( pw1 + ' - ' +  pw2 );
		if( pw1 != pw2 ) {
			return false;
		}else{
			return true;
		}
	}else{
		return true;
	}
}

//check if value is blank
function checkBlank(ele) {
	if(ele.value == '') {
		$('#' + ele.id + '-status').css('display', 'none');
	}else{
		$('#' + ele.id + '-status').css('display', 'block');
	}
}

//NEW STUFF fo CB
//validate a url
function validateUrl(theUrl){
  var v = new RegExp();
  v.compile("^[A-Za-z]+://[A-Za-z0-9-_~^]+\\.[A-Za-z0-9-_~%&\?\/.=^]+$");
  if(v.test(theUrl) ){
    return true;
  } else {
    return false;
  }
}

function validateString(string, return_invalid_chars) {
         valid_chars = '1234567890-_.^~abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
         invalid_chars = '';
         
         if(string == null || string == '')
            return(true);
         
         //For every character on the string.   
         for(index = 0; index < string.length; index++)
            {
            char = string.substr(index, 1);                        
            
            //Is it a valid character?
            if(valid_chars.indexOf(char) == -1)
              {
              //If not, is it already on the list of invalid characters?
              if(invalid_chars.indexOf(char) == -1)
                {
                //If it's not, add it.
                if(invalid_chars == '')
                   invalid_chars += char;
                else
                   invalid_chars += ', ' + char;
                }
              }
            }                     
            
         //If the string does not contain invalid characters, the function will return true.
         //If it does, it will either return false or a list of the invalid characters used
         //in the string, depending on the value of the second parameter.
         if(return_invalid_chars == true && invalid_chars != '')
           {
           last_comma = invalid_chars.lastIndexOf(',');
           
           if(last_comma != -1)
              invalid_chars = invalid_chars.substr(0, $last_comma) + 
              ' and ' + invalid_chars.substr(last_comma + 1, invalid_chars.length);
                      
           return(invalid_chars);
           }
         else
           return(invalid_chars == ''); 
         }


function validateEmailAddress(email_address) {
         //Assumes that valid email addresses consist of user_name@domain.tld
         at = email_address.indexOf('@');
         dot = email_address.indexOf('.');
         
         if(at == -1 || 
            dot == -1 || 
            dot == email_address.length - 1)
            return false;
            
         user_name = email_address.substr(0, at);
         domain_name = email_address.substr(at + 1, email_address.length);                  
         
         if(validateString(user_name) === false || 
            validateString(domain_name) === false)
            return false;                     
         
         return true;
}