function openwin(url)
{
	var iMyWidth;
	var iMyHeight;
	//half the screen width minus half the new window width (plus 5 pixel borders).
	iMyWidth = (window.screen.width/2) - (75 + 10);
	//half the screen height minus half the new window height (plus title and status bars).
	iMyHeight = (window.screen.height/2) - (100 + 50);
	//Open the window.
	var win2 = window.open(url,"Window2","status=yes,height=400,width=400,resizable=yes,left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight + ",toolbar=no,menubar=no,scrollbars=no,location=no,directories=no");
	win2.focus();
}

// form validation functions
// Check that a string contains only letters and numbers
function isAlphanumeric(string, ignoreWhiteSpace) {
   if (string.search) {
      if ((ignoreWhiteSpace && string.search(/[^\w\s]/) != -1) || (!ignoreWhiteSpace && string.search(/\W/) != -1)) return false;
   }
   return true;
}

// Check that a string contains only letters
function isAlphabetic(string, ignoreWhiteSpace) {
   if (string.search) {
      if ((ignoreWhiteSpace && string.search(/[^a-zA-Z\s]/) != -1) || (!ignoreWhiteSpace && string.search(/[^a-zA-Z]/) != -1)) return false;
   }
   return true;
}

// Check that a string contains only numbers
function isNumeric(string, ignoreWhiteSpace) {
   if (string.search) {
      if ((ignoreWhiteSpace && string.search(/[^\d\s]/) != -1) || (!ignoreWhiteSpace && string.search(/\D/) != -1)) return false;
   }
   return true;
}
// Check that the number of characters in a string is between a max and a min
function isValidLength(string, min, max) {
   if (string.length < min || string.length > max) return false;
   else return true;
}

// Check that an email address has the form something@something.something
function isValidEmailStrict(address) {
   if (isValidEmail(address) == false) return false;
   var domain = address.substring(address.indexOf('@') + 1);
   if (domain.indexOf('.') == -1) return false;
   if (domain.indexOf('.') == 0 || domain.indexOf('.') == domain.length - 1) return false;
   return true;
}

// Remove characters that might cause security problems from a string 
function removeBadCharacters(string) {
   if (string.replace) {
      string.replace(/[<>\"\'%;\)\(&\+]/, '');
   }
   return string;
}

// Remove all spaces from a string
function removeSpaces(string) {
   var newString = '';
   for (var i = 0; i < string.length; i++) {
      if (string.charAt(i) != ' ') newString += string.charAt(i);
   }
   return newString;
}

// Remove leading and trailing whitespace from a string
function trimWhitespace(string) {
   var newString  = '';
   var substring  = '';
   beginningFound = false;
   
   // copy characters over to a new string
   // retain whitespace characters if they are between other characters
   for (var i = 0; i < string.length; i++) {
      
      // copy non-whitespace characters
      if (string.charAt(i) != ' ' && string.charCodeAt(i) != 9) {
         
         // if the temporary string contains some whitespace characters, copy them first
         if (substring != '') {
            newString += substring;
            substring = '';
         }
         newString += string.charAt(i);
         if (beginningFound == false) beginningFound = true;
      }
      
      // hold whitespace characters in a temporary string if they follow a non-whitespace character
      else if (beginningFound == true) substring += string.charAt(i);
   }
   return newString;
}
// 
function toggleExpand()
{
	if (!Element.hasClassName('container', 'expanded'))
		Element.addClassName('container', 'expanded') ;
	else
		Element.removeClassName('container', 'expanded') ;
}

/* hides the message bar. Not intended to be used directly */
function cl_messages_hide() {
	Effect.Fade('cl_messages');
}

/* Wire this to body.onload to high light and dissolve the message bar */
function cl_messages_onload() {
	new Effect.Highlight('cl_messages', {duration: 1.2});
	setTimeout('cl_messages_hide()', 8000);
}

/* warns on any operation if needed */
function warn(text, url){
	var ok = confirm(text); 
	if (ok) {location.href = url;} 
	return ok; 
	return false;
}