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=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;
		vertpos=vertpos-50;
		horzpos=290;
		}
		crossobj.style.left=horzpos+"px";
		crossobj.style.top=vertpos+"px";

		crossobj.innerHTML='<div align="right" id="dragbar"><span id="closetext" onClick="closepreview()"><img src="/images/x.gif" width="15" height="15" /></span> </div><img src="'+which+'">';
		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";
	document.onmousemove = mouseCoord;
}

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");