function mousedown(e)
{
e.onmousemove = mousemove;
e.onmouseup = mouseup;

oEvent = window.event ? window.event : e;
x = oEvent.clientX;
y = oEvent.clientY;
}

function mousemove(e)
{
oEvent = window.event ? window.event : e;
var _top = oEvent.clientY - y + parseInt(this.style.top) + "px";
var _left = oEvent.clientX - x + parseInt(this.style.left) +"px";


var oIframe = document.getElementById('HelpFrame');
if(oIframe!=null){
	oIframe.style.top=_top;
	oIframe.style.left=_left;
}

this.style.top = _top;
this.style.left = _left;
x = oEvent.clientX;
y = oEvent.clientY
}

function mouseup(e)
{
this.onmousemove = null;
this.onmouseup = null;
}