/***********************************************
* Image Thumbnail viewer- © Dynamic Drive (www.dynamicdrive.com)
* Last updated Sept 26th, 03'. This notice must stay intact for use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

/***************************************************
* NS6 bug fixed by adding <div dragbar width: 1px> *
* to the crossobj.innerHTML line.                  *
* Also, small cosmetic changes                     *
* Frank Henriquez http://www.bol.ucla.edu/~frank   *
* 4/25/2005                                        *
***************************************************/

var ie=document.all
var ns6=document.getElementById&&!document.all

function ietruebody()
{
return (document.compatMode && document.compatMode!="BackCompat" && !window.opera)? document.documentElement : document.body
}

function enlarge(which, e, desc, position, imgwidth, imgheight)
{
if (ie||ns6)
  {
   crossobj=document.getElementById? document.getElementById("showimage") : document.all.showimage
   if (position=="center")
     {
      pgyoffset=ns6? parseInt(pageYOffset) : parseInt(ietruebody().scrollTop)
      horzpos=ns6? pageXOffset+window.innerWidth/2-imgwidth/2 : ietruebody().scrollLeft+ietruebody().clientWidth/2-imgwidth/2
      vertpos=ns6? pgyoffset+window.innerHeight/2-imgheight/2 : pgyoffset+ietruebody().clientHeight/2-imgheight/2
      if (window.opera && window.innerHeight) //compensate for Opera toolbar
         vertpos=pgyoffset+window.innerHeight/2-imgheight/2
      vertpos=Math.max(pgyoffset, vertpos)
      }
   else
     {
      var horzpos=ns6? pageXOffset+e.clientX : ietruebody().scrollLeft+event.clientX
      var vertpos=ns6? pageYOffset+e.clientY : ietruebody().scrollTop+event.clientY
     }
     crossobj.style.left=horzpos+"px"
     crossobj.style.top=vertpos+"px"

/* NS6 bug fixed by adding <div id="dragbar" width="1"> FH 20050522 */

var innerString='<div id="dragbar" width="1"> <div align="right" id="dragbar"> <span id="closetext" onClick="closepreview()">Close</span> </div> <img src="'+which+'">'
if (desc!==undefined)
   {
    if (desc!=='')
      innerString+='<br>'+desc
    }
innerString+='</center>'
crossobj.innerHTML=innerString
crossobj.style.visibility="visible"

return false
     }
else //if NOT IE 4+ or NS 6+, simply display image in full browser window
return true
}

function closepreview()
{
 crossobj.style.visibility="hidden"
}

function drag_drop(e)
{
 if (ie&&dragapproved)
   {
    crossobj.style.left=tempx+event.clientX-offsetx+"px"
    crossobj.style.top=tempy+event.clientY-offsety+"px"
   }
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)
{
 if (ie&&event.srcElement.id=="dragbar"||ns6&&e.target.id=="dragbar")
   {
    offsetx=ie? event.clientX : e.clientX
    offsety=ie? event.clientY : e.clientY

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

    dragapproved=true
    document.onmousemove=drag_drop
   }
 }

document.onmousedown=initializedrag
document.onmouseup=new Function("dragapproved=false")