/*--------------------------------------------------------------------------*

 *  

 *  footerFixed.js

 *  

 *  MIT-style license. 

 *  

 *  2007 Kazuma Nishihata [to-R]

 *  http://blog.webcreativepark.net

 *  

 *--------------------------------------------------------------------------*/



new function(){

	

	var footerId = "footer";

	//メイン

	function footerFixed(){

		//ドキュメントの高さ

		var dh = document.getElementsByTagName("body")[0].clientHeight;

		//フッターのtopからの位置

		document.getElementById(footerId).style.top = "0px";

		var ft = document.getElementById(footerId).offsetTop;

		//フッターの高さ

		var fh = document.getElementById(footerId).offsetHeight;

		//ウィンドウの高さ

		if (window.innerHeight){

			var wh = window.innerHeight;

		}else if(document.documentElement && document.documentElement.clientHeight != 0){

			var wh = document.documentElement.clientHeight;

		}

		if(ft+fh<wh){

			document.getElementById(footerId).style.position = "relative";

			document.getElementById(footerId).style.top = (wh-fh-ft-1)+"px";

		}

	}

	

	//文字サイズ

	function checkFontSize(func){

	

		//判定要素の追加	

		var e = document.createElement("div");

		var s = document.createTextNode("S");

		e.appendChild(s);

		e.style.visibility="hidden"

		e.style.position="absolute"

		e.style.top="0"

		document.body.appendChild(e);

		var defHeight = e.offsetHeight;

		

		//判定関数

		function checkBoxSize(){

			if(defHeight != e.offsetHeight){

				func();

				defHeight= e.offsetHeight;

			}

		}

		setInterval(checkBoxSize,1000)

	}

	

	//イベントリスナー

	function addEvent(elm,listener,fn){

		try{

			elm.addEventListener(listener,fn,false);

		}catch(e){

			elm.attachEvent("on"+listener,fn);

		}

	}



	addEvent(window,"load",footerFixed);

	addEvent(window,"load",function(){

		checkFontSize(footerFixed);

	});

	addEvent(window,"resize",footerFixed);

	

}