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

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

function enlarge(which, e, 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   = 20
            vertpos   = 20
            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
        }
        
        if (position == "center")
        {
            // Fix for older browsers 
            if (horzpos < 0 )
            {
                horzpos = 20;
                vertpos = 20;
            }        
        }
                    
        crossobj.style.left = horzpos+"px"
        crossobj.style.top  = vertpos+"px"

        crossobj.innerHTML = '<div align="right" id="dragbar"><span id="closetext" onClick="closepreview()">x</span> </div><img src="'+which+'" width="'+imgwidth+'" height="'+imgheight+'" border="0" alt="">'
        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")

function BorderFx(element, color)
{
   //if IE 4+ or NS 6+
   if (document.all || document.getElementById)
   {
      element.style.borderColor = color;
   }
}