/*
  [XiaoYeMen.Com JavaScript Library](C)2006-2009
  Author @ msn:liujian@xiaoyemen.com QQ:250560973
  $Id: V1.0 Feb 19th, 2009 00:19:00 by Jensen $
*/
function addLoadEvent(func){
  var oldonload = window.onload;
  if (typeof window.onload != 'function'){
    window.onload = func;
  }else{
    window.onload = function(){
      oldonload();
      func();
    }
  }
}
function insertAfter(newElement,targetElement){
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement){
    parent.appendChild(newElement);
  }else{
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}
function addClass(element,value){
  if(!element.className){
    element.className=value;
  }else{
    newClassName=element.className;
    newClassName+="";
    newClassName+=value;
    element.className=newClassName;
  }
}
function moveElement(elementID,final_x,final_y,interval){
  if (!document.getElementById) return false;
  if (!document.getElementById(elementID)) return false;
  var elem = document.getElementById(elementID);
  if (elem.movement){
    clearTimeout(elem.movement);
  }
  if (!elem.style.left){
    elem.style.left = "0px";
  }
  if (!elem.style.top){
    elem.style.top = "0px";
  }
  var xpos = parseInt(elem.style.left);
  var ypos = parseInt(elem.style.top);
  if (xpos == final_x && ypos == final_y){
    return true;
  }
  if (xpos < final_x){
    var dist = Math.ceil((final_x - xpos)/10);
    xpos = xpos + dist;
  }
  if (xpos > final_x){
    var dist = Math.ceil((xpos - final_x)/10);
    xpos = xpos - dist;
  }
  if (ypos < final_y){
    var dist = Math.ceil((final_y - ypos)/10);
    ypos = ypos + dist;
  }
  if (ypos > final_y){
    var dist = Math.ceil((ypos - final_y)/10);
    ypos = ypos - dist;
  }
  elem.style.left = xpos + "px";
  elem.style.top = ypos + "px";
  var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
  elem.movement = setTimeout(repeat,interval);
}