var winObj;

function zoom(nomefoto,W,H)
{
	//if(winObj != undefined)
	//{ winObj.close(); }

	var winLocation, winName, winParam;
	var winPos, winPosTop, winPosLeft, winWidth, winHeight;
		
	winPosTop = ((screen.height / 2) - H / 2)-30;
	winPosLeft = (screen.width / 2) - W / 2;

	winPos = ',top=' + winPosTop + ',left=' + winPosLeft;

	winWidth = W;
	winHeight = H;

	winLocation = 'http://www.hicnet.it/lavori_in_corso/rep/zoom.asp?nomefoto=' + nomefoto;
	winName = 'REP';

	winParam = 'status=0,toolbars=0,menubar=0,history=0,resizable=1,width=' + winWidth + ',height=' + winHeight + winPos;
	winObj = window.open(winLocation, winName, winParam);
	winObj.focus();
}