function popUp(image_url, image_width, image_height){
	
	var int_windowLeft = (screen.width  - 500)  / 2;
    var int_windowTop  = (screen.height - 300) / 2;
  
	window.open('http://www.etnoarbata.lt/themes/user/lt_svf_www/imagePopUp.html?'+image_url,'newpopup','width='+image_width+',height='+image_height+', top=' + int_windowTop + ', left=' + int_windowLeft + ', toolbar=no,scrollbars=no,resizable=no');
}