/**
* common.js
*
* @version		1.0.2.0
* @update		12:47 2008/10/08
* @lastupdate	----
* @extends		----
*
*/

( function(){

/* ============================================================================== colorRows - 'rowTint'
	Automatic coloured rows | Bite Size Standards
	http://bitesizestandards.com/bites/automatic-coloured-rows
*/
var colorRows = function() {
	var myTR = document.getElementsByTagName('tr');
	for (var i=0;i<myTR.length;i++) {
		if (i%2) {
			myTR[i].className = 'rowTint';
		}
	}
};

/* ============================================================================== initRollovers - 'imgover'
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php
*/

var initRollovers = function() {
	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 == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+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('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
};

/* ============================================================================== createExternalLink - 'external'
	Author : Sakai
	Date   : 2008-01-19
*/

var createExternalLink = function() {
	var externalLink = document.getElementsByTagName('a');
	for (var i = 0, len = externalLink.length; i < len; i++) {
		var a = externalLink[i];
		if (a.getAttribute('rel') == 'external') {
			if (a.title) a.title += ' : 新しいウィンドウで開きます';
			a.onclick = function() {
				window.open(this.getAttribute('href'), '_blank');
				return false;
			}
		}
	}
};

/* ============================================================================== pulldownMenu
	Author : Toki
	Date   : 2008-11-15
*/

var pulldownMenu = function() {
	if (!ieAppVer('6') || !ieAppVer('7')) {
		var gn = [
			document.getElementById('gn1'),
			document.getElementById('gn2'),
			document.getElementById('gn3')
		];
		for (var i = 0, l = gn.length; i < l; i++) {
			gn[i].onmouseover = mouseEvents(gn[i], '41px');
			gn[i].onmouseout  = mouseEvents(gn[i], '-4444px');
		}
	}
};

function ieAppVer(appVer) {
	var ver = navigator.appVersion;
	if (ver.indexOf('MSIE ' + appVer) > 0) return true;
	else return false;
};

function mouseEvents(target, pos) {
	var ulStyle = target.getElementsByTagName('ul')[0].style;
	return function() {
		ulStyle.position = 'absolute';
		ulStyle.top = pos;
	}
}


/* ============================================================================== gaccessFix
	Author : Toki
	Date   : 2008-11-15
*/

var gaccessFix = function() {
	var img = document.getElementsByTagName('img');
	var gaccessImg = img[img.length - 1];
	gaccessImg.style.position = 'absolute';
};


/* ============================================================================== addEvent
*/

function addEvent(elm, listener, fn){
	try{
		elm.addEventListener(listener, fn, false);
	}catch(e){
		elm.attachEvent('on' + listener, fn);
	}
}

addEvent(window, 'load', colorRows);
addEvent(window, 'load', initRollovers);
addEvent(window, 'load', createExternalLink);
addEvent(window, 'load', gaccessFix);
addEvent(window, 'load', pulldownMenu);

}) ();