// toggle nav visibility 


function showPic4(whichpic, placeholder, placeholder2, titles) {

   if (document.getElementById) {
 //document.getElementById(placeholder).src = _absolutePath + 'InfocasaEngine/Handlers/imageView.php?in=' + _photos[whichpic].name + '&is=medium';
 //document.getElementById(placeholder2).href = _absolutePath + 'InfocasaEngine/Handlers/imageView.php?in=' + _photos[whichpic].name + '&is=large';
 uMedium=new String(_thumbnailUrl);
 uMedium=uMedium.replace(/\{0\}/g,_photos[whichpic].name);
 uMedium=uMedium.replace(/\{1\}/g,'310');
 document.getElementById(placeholder).src = uMedium;
 uLarge=new String(_thumbnailUrl);
 uLarge=uLarge.replace(/\{0\}/g,_photos[whichpic].name);
 uLarge=uLarge.replace(/\{1\}/g,'large');
 document.getElementById(placeholder2).href = uLarge;
 document.getElementById(placeholder2).title = titles;
 document.getElementById(placeholder).title= titles;
 document.getElementById(placeholder).alt= titles;
      return false;
   } else {
      return true;
   }


}