// JavaScript Document
var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
var Win = navigator.appVersion.indexOf('Win',0) != -1;
var IE  = navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1;
var NN  = navigator.appName.indexOf("Netscape",0) != -1;
var Moz = navigator.userAgent.indexOf("Gecko") != -1;
var Opera = window.opera;
var Opera6 = navigator.userAgent.indexOf("Opera 6") != -1;
var Opera7 = navigator.userAgent.indexOf("Opera 7") != -1;
var Vmajor = parseInt(navigator.appVersion); // ex. 3
var Vminor = parseFloat(navigator.appVersion); // ex. 3.01
var WinIE55 = ((Win && navigator.appVersion.indexOf('MSIE 5.5',0) != -1));
var MacIE5 = ((Mac && navigator.appVersion.indexOf('MSIE 5.',0) != -1));
var MacIE4 = ((Mac && navigator.appVersion.indexOf('MSIE 4.',0) != -1));
var MacIE3 = ((Mac && navigator.appVersion.indexOf('MSIE 3.',0) != -1));
var iCab = (navigator.userAgent.indexOf("iCab",0) != -1);

function getInnerSize() {
 var obj = new Object();

 if (document.all || (document.getElementById && IE)) {
  obj.width = document.body.clientWidth;
  obj.height = document.body.clientHeight;

 } else if (document.layers || document.getElementById) {
  obj.width = window.innerWidth;
  obj.height = window.innerHeight;
 }

 return obj;
}

function getScrollLeft() {
 if ((navigator.appName.indexOf("Microsoft Internet Explorer", 0) != -1)) {
  return document.body.scrollLeft;
 } else if (window.pageXOffset) {
  return window.pageXOffset;
 } else {
  return 0;
 }
}

// anchor
function getScrollTop() {
 if ((navigator.appName.indexOf("Microsoft Internet Explorer", 0) != -1)) {
  return document.body.scrollTop;
 } else if (window.pageYOffset) {
  return window.pageYOffset;
 } else {
  return 0;
 }
}

var pageScrollTimer;
function pageScroll(toX,toY,frms,cuX,cuY) {
 if (pageScrollTimer) clearTimeout(pageScrollTimer);
 if (!toX || toX < 0) toX = 0;
 if (!toY || toY < 0) toY = 0;
 if (!cuX) cuX = 0 + getScrollLeft();
 if (!cuY) cuY = 0 + getScrollTop();
 if (!frms) frms = 6;

 if (toY > cuY && toY > (getAnchorPosObj('end').y) - getInnerSize().height) toY = (getAnchorPosObj('end').y - getInnerSize().height) + 1;
 cuX += (toX - getScrollLeft()) / frms; if (cuX < 0) cuX = 0;
 cuY += (toY - getScrollTop()) / frms;  if (cuY < 0) cuY = 0;
 var posX = Math.floor(cuX);
 var posY = Math.floor(cuY);
 window.scrollTo(posX, posY);

 if (posX != toX || posY != toY) {
  pageScrollTimer = setTimeout("pageScroll("+toX+","+toY+","+frms+","+cuX+","+cuY+")",16);
 }
}

function jumpToPageTop() {
 if (!Opera && !iCab) {
  pageScroll(0,0,10);
 } else {
  if (Opera) {
   location.href = "#top";
  } else {
   location.hash = "top";
  }
 }
}

function setObj(id) {
 if (document.all) {
  return document.all(id);
 } else if (document.getElementById) {
  return document.getElementById(id);
 } else if (document.layers) {
  return document.layers[id];
 }
 return false;
}

function getAnchorPosObj(elementname) {
 var obj = setObj(elementname);
 var objnew = new Object();
 var objtmp;

 if (document.getElementById) {
  objtmp = obj;
  objnew.x = objtmp.offsetLeft;
  objnew.y = objtmp.offsetTop;
  while ((objtmp = objtmp.offsetParent) != null) {
   objnew.x += objtmp.offsetLeft;
   objnew.y += objtmp.offsetTop;
  }
 } else if (document.all) {
  objtmp = obj;
  objnew.x = objtmp.offsetLeft;
  objnew.y = objtmp.offsetTop;
  while ((objtmp = objtmp.offsetParent) != null) {
   objnew.x += objtmp.offsetLeft;
   objnew.y += objtmp.offsetTop;
  }
 } else if (document.layers) {
  objnew.x = document.anchors[elementname].x;
  objnew.y = document.anchors[elementname].y;
 } else {
  objnew.x = 0;
  objnew.y = 0;
 }
 return objnew;
}

function getHash(strPath) {
	return strPath.substring(strPath.lastIndexOf("#") + 1);
}

function getContFontSize() {
 var intSize = 0;

 if (Moz || Opera) {
  intSize = 16;
 }

 return intSize;
}

function jumpToAnchor(elementname) {
 if ((!getAnchorPosObj(getHash(elementname)).x - getContFontSize() <= 0 || getAnchorPosObj(getHash(elementname)).y - getContFontSize() <= 0) && !Opera && !iCab){
  pageScroll(0, getAnchorPosObj(getHash(elementname)).y - getContFontSize(), 5);
 } else {
  if (Opera) {
   location.href = "#" + elementname;
  } else {
   location.hash = elementname;
  }
 }
}