i want to drag this html element when i click button


Code:
<div id="p513_2_4" style="position: absolute; width: 32px; height: 32px; top: 96px; left: 32px; cursor: move; z-index: 69; visibility: visible; " onmouseover="return escape(dd.elements.p513_2_4.tooltip)"><img style="bottom:0px" src="5331/img/item/7_3.gif"></div>

to this this html element:

Code:
<div id="p8_1_1" style="width: 168px; height: 194px; position: relative; top: 0px; left: 0px; cursor: auto; z-index: 52; visibility: visible; ">
        <div id="healmessage" style="display:none;filter:alpha(opacity=100);-moz-opacity:1.0"></div>
    </div>
how can i do it ?