Дядката от BGtop - Как се прави ?

<center><script type="text/javascript">
var ns4=document.layers
var ie4=document.all
var ns6=document.getElementById&&!document.all

//drag drop function for NS 4////
/////////////////////////////////

var dragswitch=0
var nsx
var nsy
var nstemp

function drag_dropns(name){
if (!ns4)
return
temp=eval(name)
temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
temp.onmousedown=gons
temp.onmousemove=dragns
temp.onmouseup=stopns
}

function gons(e){
temp.captureEvents(Event.MOUSEMOVE)
nsx=e.x
nsy=e.y
}
function dragns(e){
if (dragswitch==1){
temp.moveBy(e.x-nsx,e.y-nsy)
return false
}
}

function stopns(){
temp.releaseEvents(Event.MOUSEMOVE)
}

//drag drop function for ie4+ and NS6////
/////////////////////////////////


function drag_drop(e){
if (ie4&&dragapproved){
crossobj.style.left=tempx+event.clientX-offsetx
crossobj.style.top=tempy+event.clientY-offsety
return false
}
else if (ns6&&dragapproved){
crossobj.style.left=tempx+e.clientX-offsetx+"px"
crossobj.style.top=tempy+e.clientY-offsety+"px"
return false
}
}

function initializedrag(e){
crossobj=ns6? document.getElementById("showimage") : document.all.showimage
var firedobj=ns6? e.target : event.srcElement
var topelement=ns6? "html" : document.compatMode && document.compatMode!="BackCompat"? "documentElement" : "body"
while (firedobj.tagName!=topelement.toUpperCase() && firedobj.id!="dragbar"){
firedobj=ns6? firedobj.parentNode : firedobj.parentElement
}

if (firedobj.id=="dragbar"){
offsetx=ie4? event.clientX : e.clientX
offsety=ie4? event.clientY : e.clientY

tempx=parseInt(crossobj.style.left)
tempy=parseInt(crossobj.style.top)

dragapproved=true
document.onmousemove=drag_drop
}
}
document.onmouseup=new Function("dragapproved=false")

////drag drop functions end here//////

function hidebox(){
crossobj=ns6? document.getElementById("showimage") : document.all.showimage
if (ie4||ns6)
crossobj.style.visibility="hidden"
else if (ns4)
document.showimage.visibility="hide"
}
</script></center>

<center><div align="center" id="showimage" style="position:absolute;width:250px;left:250px;top:250px">

<table align=''center'' border="0" width="250" bgcolor="#333333" cellspacing="0" cellpadding="2">
<tr>
<td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="0"
height="36px">
<tr>
<td id="dragbar" style="cursor:hand; cursor:pointer" width="100%" onMousedown="initializedrag(event)"><ilayer width="100%" onSelectStart="return false"><layer width="100%" onMouseover="dragswitch=1;if (ns4) drag_dropns(showimage)" onMouseout="dragswitch=0"><font face="Verdana"
color="#FFFFFF"><center><strong><b>Заглавие на прозореца</b></strong></font></layer></ilayer></center></td>
<td style="cursor:hand"><a href="#" onClick="hidebox();return false"><img src="images/close.gif" width="17px"
height="14px" border=0></a></td>
</tr>
<tr>
<td class =''lista'' width="100%" bgcolor="#333333" style="padding:4px" colspan="2"></center>


//Тук сложи съдържанието в прозореца(снимки, текст или каквото искаш)


</td>
</tr>
</table>
</td>
</tr>
</table>
</div>