4
var dragobjekt = null;
var dragx = 0;
var dragy = 0;
var posx = 0;
var posy = 0;
function draginit() {
  document.onmousemove = drag;
  document.onmouseup = dragstop;
}
function dragstart(element) {
  dragobjekt = element;
  dragx = posx - dragobjekt.offsetLeft;
  dragy = posy - dragobjekt.offsetTop;
}
function dragstop() {
  dragobjekt=null;
}
function drag(ereignis) {

  posx = document.all ? window.event.clientX : ereignis.pageX;
  posy = document.all ? window.event.clientY : ereignis.pageY;
  if(dragobjekt != null) {
    dragobjekt.style.left = (posx - dragx) + "px";
    dragobjekt.style.top = (posy - dragy) + "px";
}
}