here is my beautiful example
<html><head>
<style type="text/css">
..drag{
position:relative;
cursor:move;
z-index: 100;
}
</style>
<script type="text/javascript">
var dragobject={
z: 0, x: 0, y: 0, offsetx : null, offsety : null, targetobj : null,
dragapproved : 0,
initialize:function(){
document.onmousedown=this.drag
document.onmouseup=function(){this.dragapproved=0}
},
drag:function(e){
var evtobj=window.event? window.event : e
this.targetobj=window.event? event.srcElement : e.target
if (this.targetobj.className=="drag"){
this.dragapproved=1
if
(isNaN(parseInt(this.targetobj.style.left))){this.targetobj.style.left=0}
if
(isNaN(parseInt(this.targetobj.style.top))){this.targetobj.style.top=0}
this.offsetx=parseInt(this.targetobj.style.left)
this.offsety=parseInt(this.targetobj.style.top)
this.x=evtobj.clientX
this.y=evtobj.clientY
if (evtobj.preventDefault)
evtobj.preventDefault()
document.onmousemove=dragobject.moveit
}
},
moveit:function(e){
var evtobj=window.event? window.event : e
if (this.dragapproved==1){
this.targetobj.style.left=this.offsetx+evtobj.clientX-this.x+"px"
this.targetobj.style.top=this.offsety+evtobj.clientY-this.y+"px"
return false
}
}
}
dragobject.initialize()
function getPosition(ev){
ev = ev || window.event;
var mousepos = getMouseCoords(ev)
if(mousepos.y < posTop()+50){
pageScrollUp(mousepos.y,ev)
}
}
function getMouseCoords(ev){
if(ev.pageX || ev.pageY){
return{x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
function posTop(){
return typeof window.pageYOffset != 'undefined' ? windowPageYOffset :
document.documentElement
&& document.documentElement.scrollTop ?
document.documentElement.scrollTop : document.body.scrollTop ?
document.body.scrollTop : 0;
}
function pageScrollUp(mousePosY,ev){
window.scrollBy(0,-80);
var d = document.getElementById('myDiv');
ev = ev || window.event;
var mousepos = getMouseCoords(ev);
d.style.top = (mousePosY - 80)+'px';
}
</script>
</head><body>
<h1>Test test</h1><h1>Test test test</h1><h1>Test test test
test</h1><h1>Test test test test test</h1>
<h1>Test test test test test test</h1><h1>Test test test test
test</h1><h1>Test test test test</h1>
<h1>Test test test</h1><h1>Test test</h1><h1>Test test</h1><h1>Test
test test</h1><h1>Test test test test</h1>
<h1>Test test test test test</h1>
<div id="myDiv" class="drag" style="border:blue solid
1px;background-color:lightyellow;width:100px;"
onMouseMove='getPosition();'>Drag Me<br>Anywhere</div>
<h1>Test test</h1><h1>Test test test</h1><h1>Test test test
test</h1><h1>Test test test test test</h1>
<h1>Test test test test test test</h1><h1>Test test test test
test</h1><h1>Test test test test</h1>
<h1>Test test test</h1><h1>Test test</h1><h1>Test test</h1><h1>Test
test test</h1><h1>Test test test test</h1>
<h1>Test test test test test</h1>
</body></html>
