var DOM = (document.getElementById)?true:false;
var NN = (document.layers)?true:false;
var IE = (document.all)?true:false;
var NN6 = DOM;
var Opera = DOM && window.opera;
function getElement(objname)
{
  if (IE) return document.all[objname];
  if (NN) return getNNElement(null, objname);
  if (DOM) return document.getElementById(objname);
}

function openimgbig(x_size,y_size,url,pic_id)
        {
status_str='toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+x_size+',height='+y_size;
win='win'+pic_id;
window.open('/img.php?url='+url, win, status_str);
//win.focus();
        }

function changeImg(url,name)
{
   el=getElement(name);
   el.src=url;
}
function big_pic(x_size,y_size,address,pic_id)
{
status_str='toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+x_size+',height='+y_size+',top=80,left=80';
win='win'+pic_id;
window.open('/php/big_pic.php?url='+address, win, status_str);
}