//*****************************************
// FunctionName : elementScroll
// Filename : elescroll.js
// Copyright (c) VERSION510. ALL RIGHTS RESERVED.
// X Library is licensed by Cross-Browser.com
//*****************************************
// 070115 Modified
// 061021 Modified
//*****************************************

// set event listener
function setScrollEvent(){
  if(window.attachEvent){  // for IE, including IE7
    var e = window.attachEvent('onscroll',elementScroll);
    return e;
  }else if(window.addEventListener){  // for Firefox, Opera
    window.addEventListener('scroll',elementScroll,false);
    return true;
  }else if(document.addEventListener){  // for Safari, Opera
    document.addEventListener('scroll',elementScroll,false);
    return true;
  }else{
    return false;
  }
}

function elementScroll(){
  var ele=document.getElementById('navi');
  var stime=800;
  var offset=document.documentElement.scrollTop;
  xSlideTo(ele,0,offset+35,stime);
}

// run
setScrollEvent();

// Use X Library - licensed by Cross-Browser.com
/* create.js compiled from X 4.01 with XC 0.29b. Distributed under GNU LGPL. For copyrights, license, documentation and more visit Cross-Browser.com */
var xOp7Up,xOp6Dn,xIE4Up,xIE4,xIE5,xNN4,xUA=navigator.userAgent.toLowerCase();if(window.opera){var i=xUA.indexOf('opera');if(i!=-1){var v=parseInt(xUA.charAt(i+6));xOp7Up=v>=7;xOp6Dn=v<7;}}else if(navigator.vendor!='KDE' && document.all && xUA.indexOf('msie')!=-1){xIE4Up=parseFloat(navigator.appVersion)>=4;xIE4=xUA.indexOf('msie 4')!=-1;xIE5=xUA.indexOf('msie 5')!=-1;}else if(document.layers){xNN4=true;}xMac=xUA.indexOf('mac')!=-1;function xDef(){for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=='undefined') return false;}return true;}function xGetElementById(e){if(typeof(e)=='string') {if(document.getElementById) e=document.getElementById(e);else if(document.all) e=document.all[e];else e=null;}return e;}function xLeft(e, iX){if(!(e=xGetElementById(e))) return 0;var css=xDef(e.style);if (css && xStr(e.style.left)) {if(xNum(iX)) e.style.left=iX+'px';else {iX=parseInt(e.style.left);if(isNaN(iX)) iX=0;}}else if(css && xDef(e.style.pixelLeft)) {if(xNum(iX)) e.style.pixelLeft=iX;else iX=e.style.pixelLeft;}return iX;}function xMoveTo(e,x,y){xLeft(e,x);xTop(e,y);}function xNum(){for(var i=0; i<arguments.length; ++i){if(isNaN(arguments[i]) || typeof(arguments[i])!='number') return false;}return true;}function xSlideTo(e, x, y, uTime){if (!(e=xGetElementById(e))) return;if (!e.timeout) e.timeout = 25;e.xTarget = x; e.yTarget = y; e.slideTime = uTime; e.stop = false;e.yA = e.yTarget - xTop(e); e.xA = e.xTarget - xLeft(e); if (e.slideLinear) e.B = 1/e.slideTime;else e.B = Math.PI / (2 * e.slideTime); e.yD = xTop(e); e.xD = xLeft(e); var d = new Date(); e.C = d.getTime();if (!e.moving) _xSlideTo(e);}function _xSlideTo(e){if (!(e=xGetElementById(e))) return;var now, s, t, newY, newX;now = new Date();t = now.getTime() - e.C;if (e.stop) { e.moving = false; }else if (t < e.slideTime) {setTimeout("_xSlideTo('"+e.id+"')", e.timeout);s = e.B * t;if (!e.slideLinear) s = Math.sin(s);newX = Math.round(e.xA * s + e.xD);newY = Math.round(e.yA * s + e.yD);xMoveTo(e, newX, newY);e.moving = true;}  else {xMoveTo(e, e.xTarget, e.yTarget);e.moving = false;if (e.onslideend) e.onslideend();}  }function xStr(s){for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])!='string') return false;}return true;}function xTop(e, iY){if(!(e=xGetElementById(e))) return 0;var css=xDef(e.style);if(css && xStr(e.style.top)) {if(xNum(iY)) e.style.top=iY+'px';else {iY=parseInt(e.style.top);if(isNaN(iY)) iY=0;}}else if(css && xDef(e.style.pixelTop)) {if(xNum(iY)) e.style.pixelTop=iY;else iY=e.style.pixelTop;}return iY;}