/*==========================================================*/
/* �w�i�؂�ւ� */

function getCSS()
{
 datetoday = new Date();
 timenow=datetoday.getTime();
 datetoday.setTime(timenow);
 thehour = datetoday.getHours();

 if (thehour >= 19)
  display = "css/bg_night.css";
 else if (thehour >= 16)
  display = "css/bg_evening.css";
 else if (thehour >= 10)
  display = "css/bg_noon.css";
 else if (thehour >= 4)
  display = "css/bg_morning.css";
 else if (thehour >= 0)
  display = "css/bg_night.css";
 else
  display = "css/bg_noon.css";
 var css = '<';  css+='link rel="stylesheet" href=' + display + ' \/';  css+='>';
 document.write(css);
// End -->
}

function getCSS2()
{
 datetoday = new Date();
 timenow=datetoday.getTime();
 datetoday.setTime(timenow);
 thehour = datetoday.getHours();

 if (thehour >= 19)
  display = "../css/bg_night.css";
 else if (thehour >= 16)
  display = "../css/bg_evening.css";
 else if (thehour >= 10)
  display = "../css/bg_noon.css";
 else if (thehour >= 4)
  display = "../css/bg_morning.css";
 else if (thehour >= 0)
  display = "../css/bg_night.css";
 else
  display = "../css/bg_noon.css";
 var css = '<';  css+='link rel="stylesheet" href=' + display + ' \/';  css+='>';
 document.write(css);
// End -->
}


/*==========================================================*/
/* rollover */

function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}

/*==========================================================*/
/* pageup */

function fUp() {
	var d=document;
	var scroll_left=d.body.scrollLeft || d.documentElement.scrollLeft || d.scrollX || 0;
	var scroll_top=d.body.scrollTop || d.documentElement.scrollTop || d.scrollY || 0;
	scrollTo(scroll_left/2, scroll_top/2);
	if(scroll_left>0 || scroll_top>0){
	var f=setTimeout("fUp()", 35);
	}else{
		clearTimeout(f);
	}
}