function open_img_window(element,img_id)
{
newWindow=document.createElement('div'); 
newWindow.className="nove_okno";
newWindow.innerHTML="<img src='"+element.getAttribute("href")+"' alt='' title='Zavřít kliknutím'/>";
newWindow.setAttribute('id','win_'+img_id);
newWindow.onclick=function() {document.body.removeChild(document.getElementById('win_'+img_id));}; 
document.body.appendChild(newWindow);
return false;
}