function bottons(imgname,imgfile)  
{
    //alert (imgname+' - '+imgfile);
  document.images[imgname].src='/img/design/'+imgfile+'.png';
}


	var ua = navigator.userAgent.toLowerCase();
	var isOpera = (ua.indexOf('opera')  > -1);
	var isIE = (!isOpera && ua.indexOf('msie') > -1);

	function getDocumentHeight() {
	  return Math.max(document.compatMode != 'CSS1Compat' ? document.body.scrollHeight : document.documentElement.scrollHeight, getViewportHeight());
	}

	function getViewportHeight() {
	  return ((document.compatMode || isIE) && !isOpera) ? (document.compatMode == 'CSS1Compat') ? document.documentElement.clientHeight : document.body.clientHeight : (document.parentWindow || document.defaultView).innerHeight;
	}



  function viewVideo(linkvideo) {
    //alert (linkvideo);
    //winHeight = getClientHeight();
    //topposition = winHeight/2 - 100;

    var scrH = screen.height;
    var scrW = screen.width;
    topposition = scrH/2 - 200;
    leftposition = scrW/2 - 300;

    window.open(linkvideo, '_blank', 'location=0,width=700,height=400,top='+topposition+',left='+leftposition );
  }