/* ロールオーバーイメージ */
(function(){function image_rollover(){var rollover={src:function(src,regex,flg){var result=regex.exec(src);if(result){return(result[1]+flg+result[2])}},func:function(regex,flg){return function(){var result=rollover.src(this.getAttribute('src'),regex,flg);if(result){this.setAttribute('src',result)}}}};var images=document.getElementsByTagName('img');for(var image_index=0,images_length=images.length;image_index<images_length;image_index++){var classname=getClassName(images[image_index]);if(classname&&classname.split(' ').indexOf('rollover')>=0){new Image().src=rollover.src(images[image_index].getAttribute('src'),/^(.+)_off(\..+)$/,'_on');images[image_index].onmouseover=rollover.func(/^(.+)_off(\..+)$/,'_on');images[image_index].onmouseout=rollover.func(/^(.+)_on(\..+)$/,'_off')}}}function getClassName(object){return object.getAttribute('class')||object.getAttribute('className')||''}function addEvent(object,listener,func){if(!!window.attachEvent){object.attachEvent('on'+listener,func)}else if(!!window.addEventListener){object.addEventListener(listener,func,false)}else{return false}}if(!Array.prototype.indexOf){Array.prototype.indexOf=function(r){for(var index=0,array_length=this.length;index<array_length;index++){if(r==this[index]){return index}}return-1}}addEvent(window,'load',image_rollover)})();