/*====================================================================================================

//////////////////////////////////////////////////////////////////////////////////////////////////////



 Author : http://www.yomotsu.net

 created: 2007/03/13

 update : 2008/01/21

 Licensed under the GNU Lesser General Public License version 2.1



//////////////////////////////////////////////////////////////////////////////////////////////////////

====================================================================================================*/

var yomotsuRollover = {

	

	main : function() {

		var img = document.images, ipt = document.getElementsByTagName('input'), i, preLoadImg = [];

		// img elements

		for (i = 0; i <img.length; i++) {

			if ((img[i].src.match(/.*_off\./))||(img[i].style.filter)){

				preLoadImg[preLoadImg.length] = new Image;

				preLoadImg[preLoadImg.length-1].src = img[i].src.replace('_off.', '_on.');



				img[i].onmouseover = yomotsuRollover.over;

				img[i].onmouseout  = yomotsuRollover.out;

				try {img[i].addEventListener('click', yomotsuRollover.click, false);}

				catch(e){img[i].attachEvent('onclick', (function(el){return function(){yomotsuRollover.click.call(el);};})(img[i]));}

			}

		}

		// input[image] elements

		for (i = 0; i <ipt.length; i++) {

			if ((ipt[i].src.match(/.*_off\./))&&(ipt[i].getAttribute('type')=='image')){

				preLoadImg[preLoadImg.length] = new Image;

				preLoadImg[preLoadImg.length-1].src = img[i].src.replace('_off.', '_on.');



				ipt[i].onmouseover = yomotsuRollover.over;

				ipt[i].onmouseout  = yomotsuRollover.out;

				try {ipt[i].addEventListener('click', yomotsuRollover.click, false);}

				catch(e){ipt[i].attachEvent('onclick', (function(el){return function(){yomotsuRollover.click.call(el);};})(ipt[i]));}

			}

		}

	}

	,

	

	over : function() {

		var imgSrc, preLoadImgSrc;

		if((this.style.filter)&&(this.style.filter.match(/_off\.png/)))//(IE5.5-6 && png)

			this.style.filter = this.style.filter.replace('_off.png', '_on.png');

		else

			this.src = this.src.replace('_off.', '_on.');

	},



	out : function(){

		if((this.style.filter)&&(this.style.filter.match(/_on\.png/)))//(IE5.5-6 && png)

			this.style.filter = this.style.filter.replace('_on.png', '_off.png');

		else

			this.src = this.src.replace('_on.', '_off.');

	},

	

	click : function(){

		if((this.style.filter)&&(this.style.filter.match(/_on\.png/)))//(IE5.5-6 && png)

			this.style.filter = this.style.filter.replace('_on.png', '_off.png');

		else

			this.src = this.src.replace('_on.', '_off.');

	},



	addEvent : function(){

		try {

			window.addEventListener('load', this.main, false);

		} catch (e) {

			window.attachEvent('onload', this.main);

		}

	}

}



yomotsuRollover.addEvent();