// Start scroll Page top
var count = 0;
var bln = 0;
function scrollTop(){
	ua = getnavi('simple');
	count = 0;
	bln = 0;
	if (ua != 'NN4'){
		timerID = setInterval('scroll()',40);
	}
	else{
		timerID = setInterval('scroll_NN()',40);
	}
}

function scroll(){
	y = 0;
	if (bln == 0){
		y = document.body.scrollTop;
		if (count < y){
			window.scrollTo(0,y - count);
			count = y / 8;
			if (count > (y - 6)){
				count = 2;
			}
		}
		else {
		clearInterval(timerID);
		bln = 1;
		location.hash='top';
		}
	}
}

// Scroll method for NN4.x
function scroll_NN(){
	y = 0;
	if (bln == 0){
		y = pageYOffset;
		if (count < y){
			window.scrollTo(0,y - count);
			count = y / 8;
			if (count > (y - 6)){
				count = 2;
			}
		}
		else {
		clearInterval(timerID);
		bln = 1;
		location.hash='top';
		}
	}
}
// End scroll Page top
// Get Web Client Name & Version
function getnavi(style){
	ua = new Array();
	ua[0] = '';
	ua[1] = navigator.appName;
	ua[2] = navigator.appVersion;
	ua[3] = navigator.appVersion.charAt(0);
	if (ua[2].indexOf("MSIE") > -1){
		ua[0] = 'IE';
	}
	else if (ua[2].indexOf("Apple") > -1){
		ua[0] = 'safari';
	}
	else if ((ua[3].indexOf("5") > -1) && (ua[1].indexOf("Netscape") > -1)){
		ua[0] = 'NN6';
	}
	else if ((ua[3].indexOf("4") > -1) && (ua[1].indexOf("Netscape") > -1)){
		ua[0] = 'NN4';
	}
	else if (ua[1].indexOf("Opera") > -1){
		ua[0] = 'Opera';
	}
	else {
		ua[0] = 'other';
	}
	if (style == 'simple'){
		return ua[0];
	}
	else {
		return ua;
	}
}
	

// Image Pre Loading
function image_load()
{
	img = new Array();
	for (i=0;i++;i<=100){
	 img[i] = new Image();
	}

	img[0]='img/navi/naiv01_on.gif';
	img[1]='img/navi/naiv01.gif';
	img[2]='img/navi/naiv02_on.gif';
	img[3]='img/navi/naiv02.gif';
	img[4]='img/navi/naiv03_on.gif';
	img[5]='img/navi/naiv03.gif';
	img[6]='img/navi/naiv04_on.gif';
	img[7]='img/navi/naiv04.gif';
	img[8]='img/navi/naiv05_on.gif';
	img[9]='img/navi/naiv05.gif';
	img[10]='img/navi/naiv06_on.gif';
	img[11]='img/navi/naiv06.gif';
	img[12]='img/navi/naiv07_on.gif';
	img[13]='img/navi/naiv07.gif';
	img[14]='img/navi/naiv08_on.gif';
	img[15]='img/navi/naiv08.gif';
	img[14]='img/navi/naiv09_on.gif';
	img[15]='img/navi/naiv09.gif';
	img[14]='img/navi/naiv10_on.gif';
	img[15]='img/navi/naiv10.gif';
}

// Menu Roll Over
function navi_top(sw,imgname)
{
	url = new Image();
	if (sw == 'on'){
		url.src = 'img/navi/' + imgname + '_on.gif';
	}
	else {
		url.src = 'img/navi/' + imgname + '.gif';
	}
	document.images[imgname].src=url.src;
}

// Menu Roll Over
function navi_chg(sw,imgname)
{
	url = new Image();
	if (sw == 'on'){
		url.src = '../img/navi/' + imgname + '_on.gif';
	}
	else {
		url.src = '../img/navi/' + imgname + '.gif';
	}
	document.images[imgname].src=url.src;
}