Функция на javascript
[JS]function movik(e) {
this.onmousemove = function() {
var element = document.getElementById('knopb');
element.style.left=xpos+window.event.clientX+pageXOffset-e.clientX;
element.style.top=ypos+window.event.clientY+pageYOffset-e.clientY;
}
this.onmouseup = function(){ this.onmousemove = function(){}; }
}[/JS]
Стили
[CSS]<style type=text/css>
#knopb {
position:absolute;
top: 0px;
left: 0px;

}
</style>[/CSS]
Html код