/* - www.quirksmode.org - */
function createCookie(name,value,hours) {
	if (hours) {
		var date = new Date();
		date.setTime(date.getTime()+(hours*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}
function eraseCookie(name) {
	createCookie(name,"",-1);
}
/* - end - */

function loadXMLDoc(dname) {
  var xmldoc;
  // code for IE
  if (window.ActiveXObject)
    xmldoc=new ActiveXObject("Microsoft.XMLDOM");
  // code for Mozilla, Firefox, Opera, etc.
  else if (document.implementation && document.implementation.createDocument)
    xmldoc=document.implementation.createDocument("","",null);
  else return false;
  
  xmldoc.async=false;
  xmldoc.load(dname);
  return(xmldoc);
}

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

function addClass(el, newclass) {
  if (el.className)
    el.className = el.className+" "+newclass;
  else
    el.className = newclass;
}

function removeClass(el, oldclass) {
  if (el.className==oldclass)
    el.className = "";
  else {
    var regexp = new RegExp(oldclass, "g");
    el.className = el.className.replace(regexp, "");
    el.className = trim(el.className);
  }
}

function hasClass(el, theclass) {
  if (!el.className)
    return false;  
  else {    
    var regexp = new RegExp( "(^|\\s)"+theclass+"(\\s|$)" ,"g");  
    return (regexp.test(el.className));
  }      
}