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){
		fotoview=document.getElementById? document.getElementById("showimage") : document.all.showimage
		if (position=="center"){
			var pgyoffset=ns6? parseInt(pageYOffset) : parseInt(ietruebody().scrollTop)
			var horzpos=ns6? pageXOffset+window.innerWidth/2-imgwidth/2 : ietruebody().scrollLeft+ietruebody().clientWidth/2-imgwidth/2;
			var vertpos=ns6? pgyoffset+window.innerHeight/2-imgheight/2 : pgyoffset+ietruebody().clientHeight/2-imgheight/2;
			if (window.opera && window.innerHeight)
				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;
		}
	horzpos = horzpos - 210; //left del div pagina
	vertpos = vertpos - 272; //top del div pagina
	fotoview.style.left=horzpos+"px";
	fotoview.style.top=vertpos+"px";
	//fotoview.style.width=imgwidth+"px";
	//fotoview.style.height=imgheight+"px";

	fotoview.innerHTML='<div align="right" id="dragbar"><span id="closetext" onClick="closepreview()" style="cursor: pointer; cursor:hand;">Chiudi</span></div><img src="'+which+'">';
	fotoview.style.visibility="visible";
	return false;
	}
	else
		return true;
}

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

function drag_drop(e){
	if (ie&&dragapproved){
		fotoview.style.left=tempx+event.clientX-offsetx+"px";
		fotoview.style.top=tempy+event.clientY-offsety+"px";
	}
	else if (ns6&&dragapproved){
		fotoview.style.left=tempx+e.clientX-offsetx+"px";
		fotoview.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(fotoview.style.left);
		tempy=parseInt(fotoview.style.top);

		dragapproved=true;
		document.onmousemove=drag_drop;
	};
};

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