/*
Copyright 2005 Netvibes
Author : Florent FREMONT
*/

var Utils = new Object();

function getElementsByClassName(node, className) {
 var children = node.getElementsByTagName('*');
 var elements = new Array();
 for (var i=0; i<children.length; i++) {
  var child = children[i];
  var classNames = child.className.split(' ');
  for (var j = 0; j < classNames.length; j++) {
   if (classNames[j] == className) {
    elements.push(child);
    break;
   }
  }
 }
 return elements;
}

function getNodeID(parent, id) {
 var ln = parent.childNodes.length;
 for (var z=0; z<ln; z++) {
  if (parent.childNodes[z].id == id) return parent.childNodes[z];
 }
 return null;
}

Utils.getChildrenByTagName = function(node, tagName) {
 var ln = node.childNodes.length;
 var arr = []; 
 for (var z=0; z<ln; z++) {
  if (node.childNodes[z].nodeName==tagName) arr.push(node.childNodes[z]);
 }
 return arr;
}

Utils.getColonTag = function(node, tag, name) {
 return (Browser.isIE) ? node.getElementsByTagName(tag+":"+name)[0] : node.getElementsByTagName(name)[0];
}

var Browser = new Object();

Browser.isMozilla = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined') && (typeof HTMLDocument!='undefined');
Browser.isIE = window.ActiveXObject ? true : false;
Browser.isFirefox = (navigator.userAgent.toLowerCase().indexOf("firefox")!=-1);
Browser.isSafari = (navigator.userAgent.toLowerCase().indexOf("safari")!=-1);
Browser.isOpera = (navigator.userAgent.toLowerCase().indexOf("opera")!=-1);

if (Browser.isMozilla) {
 HTMLElement.prototype.removeNode = function() {
  this.parentNode.removeChild(this);
 }
}

Utils.htmlEncode = function(text) {
 return text.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}

/*
<!--[if IE]>
 <a href onClick="this.style.behavior='url(#default#homepage)';this.setHomePage('http://www.netvibes.com');">Make Netvibes your homepage</a>
<![endif]-->
*/

function isEmailValid(e) {
 var ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.+@-_QWERTYUIOPASDFGHJKLZXCVBNM";
 for(var i=0; i<e.length; i++){
  if (ok.indexOf(e.charAt(i))<0) {
   return false;
  }
 }
 if (document.images) {
  var re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
  var re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,8}|[0-9]{1,3})(\]?)$/;
  if (!e.match(re) && e.match(re_two)) {
   return -1;
  }
 }
}

var notspace = /\S/;
Utils.cleanWhitespace = function(node){
 for (var x=0; x<node.childNodes.length; x++) {
  var child = node.childNodes[x];
  //if it's a whitespace text node
  if ((child.nodeType == 3) && (!notspace.test(child.nodeValue))) {
   node.removeChild(node.childNodes[x]);
   //node.childNodes[x].removeNode();
   x--;
  }
  //elements can have text child nodes of their own
  if(child.nodeType == 1) {
   Utils.cleanWhitespace(child);
  }
 }
}

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

/*
function xmlToString(thexml){
 if(thexml.xml){
  // MSIE
  xmlString = thexml.xml;
 }else{
  // Gecko
  xmlString = (new XMLSerializer).serializeToString(thexml);
 }
 return xmlString;
}
*/