//Rollover Images
/*
*	Image rollover js
*	Author : Kazuhito Hokamura
*	http://webtech-walker.com/
*
*	Licensed under the MIT License:
*	http://www.opensource.org/licenses/mit-license.php
*/

(function(){
	function rollover(){
		var targetClassName = "overImg";
		var suffix = "_on";

		var overReg = new RegExp("^(.+)(\\.[a-z]+)$");
		var outReg = new RegExp("^(.+)" + suffix + "(\\.[a-z]+)$");

		var preload = new Array();
		var images = document.getElementsByTagName("img");

		for (var i = 0, il = images.length; i < il; i++) {
			var classStr = images[i].getAttribute("class") || images[i].className;
			var classNames = classStr.split(/\s+/);
			for(var j = 0, cl = classNames.length; j < cl; j++){
				if(classNames[j] == targetClassName){
					//preload
					preload[i] = new Image();
					preload[i].src = images[i].getAttribute("src").replace(overReg, "$1" + suffix + "$2");

					//mouseover
					images[i].onmouseover = function() {
						this.src = this.getAttribute("src").replace(overReg, "$1" + suffix + "$2");
					}
					//mouseout
					images[i].onmouseout = function() {
						this.src = this.getAttribute("src").replace(outReg, "$1$2");
					}
				}
			}
		}
	}

	function addEvent(elem,event,func){
		if(elem.addEventListener) {
			elem.addEventListener(event, func, false);
		}else if(elem.attachEvent) {
			elem.attachEvent("on" + event, func);
		}
	}
	addEvent(window,"load",rollover);
})();



//target="_blank"
window.onload = blankLinks;

function blankLinks() {
	var x = document.getElementsByTagName('a');
	for (var i=0; i<x.length; i++) {
		if (x[i].getAttribute('className') == 'blank' || x[i].getAttribute('class') == 'blank' || 
			x[i].getAttribute('className') == 'blankLink' || x[i].getAttribute('class') == 'blankLink') {
			x[i].target = '_blank';
		}
	}
}


//headline
// 
// @name marquee.js
// @author miya2000
// @namespace http://d.hatena.ne.jp/miya2000/
// @version 1.0.0
// 

var Marquee = function(id, opt){ 
	if(!document.getElementById(id)) throw 'invalid id. [' + id + ']';
	var option = opt || {};
	this.id	 = id;
	this.amount = option.amount || 6;
	this.delay  = option.delay  || 100;
	this.position = Number.POSITIVE_INFINITY;	// means out of range.
	this._wrap();
	this.start();
}
Marquee.prototype = {
	/* wrap child nodes */
	_wrap : function() {
		var t = document.getElementById(this.id);
		with ( t.style ){
			position = 'relative'; // for ie6.
			overflow = 'hidden';
		}
		var w = document.createElement('div');
		with ( w.style ){
			margin  = '0';
			padding	= '0';
			background = 'transparent';
			border     = 'none';
		}
		t.normalize();
		while( t.firstChild ){
			w.appendChild( t.removeChild( t.firstChild ) );
		}
		t.appendChild(w);
		/* get minimum width. */
		w.style.position = 'absolute';
		this.minWidth = w.offsetWidth;
		/* put back */
		w.style.position = 'relative';
		w.style.width = '100%'; // for ie6.
	},
	start : function() {
		this.stop();
		this._next();
	},
	_next : function() {
		var t = document.getElementById( this.id );
		this.curWidth = Math.min(t.offsetWidth,t.parentNode.offsetWidth); // dirty. (for "overflow:hidden" parent)
		this.position = this.position - this.amount;
		if ( this._isOutOfRange() ) {
			this.position = this._startPosition();
		}
		var w = t.firstChild;
		w.style.left = this.position + 'px';
		var self = this;
		this.tid = window.setTimeout(
			function(){ self._next(); },
			this.delay
		);
	}, 
	_startPosition : function() {
		return ( this.amount > 0 ) ?  this.curWidth
								   : -this.minWidth;
	},
	_isOutOfRange : function() {
		return this.position < -this.minWidth || this.curWidth < this.position;
	},
	stop : function() {
		if ( this.tid ) window.clearTimeout( this.tid );
		this.tid = null;
	},
	isMarqueeing : function() {
		return ( this.tid ) ? true : false;
	}
}