// JavaScript Document
function popImg(iName) {
var LeftPosition =  (screen.width-500)/2;
var TopPosition =  (screen.height-500)/2;

            var pURL=iName;
                pInfo='toolbar=0,';
                pInfo+='location=0,';
                pInfo+='directories=0,';
                pInfo+='status=0,';
                pInfo+='menubar=0,';
                pInfo+='scrollbars=0,';
                pInfo+='resizable=0,';
                pInfo+='width=540,';
                pInfo+='height=540';
				pInfo+='top='+TopPosition+',';
				pInfo+='left='+LeftPosition;

            window.open(pURL, 'bigPop', pInfo);
}