//
//@back top
//
function backToTop() {	// ƒy[ƒW‚̐ζ“ͺ‚Ι–ί‚ι
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}
//
//@footer fixed
//
new function(){
	
	var footerId = "footer";
	//ƒƒCƒ“
	function footerFixed(){
		//ƒhƒLƒ…ƒƒ“ƒg‚̍‚‚³
		var dh = document.getElementsByTagName("body")[0].clientHeight;
		//ƒtƒbƒ^[‚Μtop‚©‚η‚ΜˆΚ’u
		document.getElementById(footerId).style.top = "0px";
		var ft = document.getElementById(footerId).offsetTop;
		//ƒtƒbƒ^[‚̍‚‚³
		var fh = document.getElementById(footerId).offsetHeight;
		//ƒEƒBƒ“ƒhƒE‚̍‚‚³
		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";
		}
	}
	
	//•ΆŽšƒTƒCƒY
	function checkFontSize(func){
	
		//”»’θ—v‘f‚Μ’Η‰Α	
		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;
		
		//”»’θŠΦ”
		function checkBoxSize(){
			if(defHeight != e.offsetHeight){
				func();
				defHeight= e.offsetHeight;
			}
		}
		setInterval(checkBoxSize,1000)
	}
	
	//ƒCƒxƒ“ƒgƒŠƒXƒi[
	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);
	
}