function imgviewer(){
		$('content_img1').morph('height:400px;');
		$('start').style.display = 'none';
	}
	
	var l = 1;
	function imgchange(n){
		if(l != n){
			$('imgcon'+l).fade({ duration: 0.5 });
            $('imgcon'+n).appear({ duration: 0.5 });
			$('desc'+l).style.display = 'none';
			$('desc'+n).style.display = 'block';
			$('img'+l).className = '';
			$('img'+n).className = 'imgsel';
			l = n;
		}
	}
	
    function containsDOM (container, containee) {
      var isParent = false;
      do {
        if ((isParent = container == containee))
          break;
        containee = containee.parentNode;
      }
      while (containee != null);
      return isParent;
    }

    function checkMouseEnter (element, evt) {
      if (element.contains && evt.fromElement) {
        return !element.contains(evt.fromElement);
      }
      else if (evt.relatedTarget) {
        return !containsDOM(element, evt.relatedTarget);
      }
    }

    function checkMouseLeave (element, evt) {
      if (element.contains && evt.toElement) {
        return !element.contains(evt.toElement);
      }
      else if (evt.relatedTarget) {
        return !containsDOM(element, evt.relatedTarget);
      }
    }