function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'ov') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, 'a'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('a'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;





Effect.DefaultOptions = {
  transition: Effect.Transitions.sinoidal,
  duration:   0.5,   // seconds
  fps:        60.0,  // max. 60fps due to Effect.Queue implementation
  sync:       false, // true for combining
  from:       0.0,
  to:         1.0,
  delay:      0.0,
  queue:      'parallel'
}
function ajaxShowHide(entryID) {
  element = $('Text' + entryID);
  if(element.style.display == 'none') {
    options = {
        afterFinish: function(effect) {
            $('Link' + entryID).firstChild.innerHTML = '&#171; 続きを閉じる';
            Element.show(effect.element);
        }
    };
    Effect.BlindDown(element, options);
  } else {
    options = {
        afterFinish: function(effect) {
            $('Link' + entryID).firstChild.innerHTML = '続きを見る &#187;';
            Element.hide(effect.element);
        }
    };
    Effect.BlindUp(element, options);
  }
}