// convert all characters to lowercase to simplify testing
var agt=navigator.userAgent.toLowerCase();

// *** BROWSER VERSION ***
// Note: On IE5, these return 4, so use is_ie5up to detect IE5.
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);

// Note: Opera and WebTV spoof Navigator.  We do strict client detection.
// If you want to allow spoofing, take out the tests for opera and webtv.
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
            && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
            && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
var is_nav2 = (is_nav && (is_major == 2));
var is_nav3 = (is_nav && (is_major == 3));
var is_nav4 = (is_nav && (is_major == 4));
var is_nav4up = (is_nav && (is_major >= 4));
var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
                      (agt.indexOf("; nav") != -1)) );
var is_nav6 = (is_nav && (is_major == 5));
var is_nav6up = (is_nav && (is_major >= 5));
var is_gecko = (agt.indexOf('gecko') != -1);


var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3    = (is_ie && (is_major < 4));
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
var is_ie4up  = (is_ie && (is_major >= 4));
var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);

// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
// or if this is the first browser window opened.  Thus the
// variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
var is_aol   = (agt.indexOf("aol") != -1);
var is_aol3  = (is_aol && is_ie3);
var is_aol4  = (is_aol && is_ie4);
var is_aol5  = (agt.indexOf("aol 5") != -1);
var is_aol6  = (agt.indexOf("aol 6") != -1);

var is_opera = (agt.indexOf("opera") != -1);
var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);

var is_webtv = (agt.indexOf("webtv") != -1); 

var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
var is_AOLTV = is_TVNavigator;

var is_hotjava = (agt.indexOf("hotjava") != -1);
var is_hotjava3 = (is_hotjava && (is_major == 3));
var is_hotjava3up = (is_hotjava && (is_major >= 3));

// *** JAVASCRIPT VERSION CHECK ***
var is_js;
if (is_nav2 || is_ie3) is_js = 1.0;
else if (is_nav3) is_js = 1.1;
else if (is_opera5up) is_js = 1.3;
else if (is_opera) is_js = 1.1;
else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
else if (is_hotjava3up) is_js = 1.4;
else if (is_nav6 || is_gecko) is_js = 1.5;
// NOTE: In the future, update this code when newer versions of JS
// are released. For now, we try to provide some upward compatibility
// so that future versions of Nav and IE will show they are at
// *least* JS 1.x capable. Always check for JS version compatibility
// with > or >=.
else if (is_nav6up) is_js = 1.5;
// NOTE: ie5up on mac is 1.4
else if (is_ie5up) is_js = 1.3

// HACK: no idea for other browsers; always check for JS version with > or >=
else is_js = 0.0;

// *** PLATFORM ***
var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
// NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
//        Win32, so you can't distinguish between Win95 and WinNT.
var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));

// is this a 16 bit compiled version?
var is_win16 = ((agt.indexOf("win16")!=-1) || 
           (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
           (agt.indexOf("windows 16-bit")!=-1) );  

var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
                (agt.indexOf("windows 16-bit")!=-1));

var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));
var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1));

// NOTE: Reliable detection of Win98 may not be possible. It appears that:
//       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
//       - On Mercury client, the 32-bit version will return "Win98", but
//         the 16-bit version running on Win98 will still return "Win95".
var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
var is_win32 = (is_win95 || is_winnt || is_win98 || 
                ((is_major >= 4) && (navigator.platform == "Win32")) ||
                (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));

var is_os2   = ((agt.indexOf("os/2")!=-1) || 
                (navigator.appVersion.indexOf("OS/2")!=-1) ||   
                (agt.indexOf("ibm-webexplorer")!=-1));

var is_mac    = (agt.indexOf("mac")!=-1);
// hack ie5 js version for mac
if (is_mac && is_ie5up) is_js = 1.4;
var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) || 
                           (agt.indexOf("68000")!=-1)));
var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) || 
                            (agt.indexOf("powerpc")!=-1)));

var is_sun   = (agt.indexOf("sunos")!=-1);
var is_sun4  = (agt.indexOf("sunos 4")!=-1);
var is_sun5  = (agt.indexOf("sunos 5")!=-1);
var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
var is_irix5 = (agt.indexOf("irix 5") !=-1);
var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
var is_hpux  = (agt.indexOf("hp-ux")!=-1);
var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
var is_aix1  = (agt.indexOf("aix 1") !=-1);    
var is_aix2  = (agt.indexOf("aix 2") !=-1);    
var is_aix3  = (agt.indexOf("aix 3") !=-1);    
var is_aix4  = (agt.indexOf("aix 4") !=-1);    
var is_linux = (agt.indexOf("inux")!=-1);
var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
var is_unixware = (agt.indexOf("unix_system_v")!=-1); 
var is_mpras    = (agt.indexOf("ncr")!=-1); 
var is_reliant  = (agt.indexOf("reliantunix")!=-1);
var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
       (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
       (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
var is_sinix = (agt.indexOf("sinix")!=-1);
var is_freebsd = (agt.indexOf("freebsd")!=-1);
var is_bsd = (agt.indexOf("bsd")!=-1);
var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux || 
             is_sco ||is_unixware || is_mpras || is_reliant || 
             is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);

var is_vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));

    
var lastDiv    = null;
var ksDHFlag   = false;
var ksAutoHide = true;
var ie_mac_y   = 5;
var ie_mac_x   = 7;

window.ksHideMenuTimer = null;

function initTimer() {
	window.ksHideMenuTimer = null;
}

function jumpTo(URL_List) {            
	var URL = URL_List.options[URL_List.selectedIndex].value;            
	window.location.href = URL;            
}

function getDiv(div) {
  return document.getElementById(div);

  if (document.all) {
   	for (i = 0; i < document.all.length; i++) {
      if (document.all[i].id == div) {
	      return document.all[i];
	    }
    }
  }
  else if (document.layers) {
    return document.layers[div];
  }
  else {
    divArray = document.getElementsByTagName('DIV');
   	for (i = 0; i < divArray.length; i++) {
      if (divArray[i].id == div) {
	      return divArray[i];
	    }
    }
  }
}

function setDisplay(div, display) {
  if (document.layers) {
    div.visibility=display;
  } else {
    div.style.visibility=display;
  }
}

function setLastDiv(divId) {
  lastDiv=getDiv(divId);
}

function hideLast() {
  if (lastDiv) { setDisplay(lastDiv, 'hidden'); }
  showhideAllSelects(false);
}

function hide_menu() {
  KS_clearTimeout();
  hideLast();
}

function delayed_hide_menu() {
  KS_startTimeout();
}

function setTop(div, parent, sideAligned) {
  var nTop     = xTop(parent);
  var nLeft    = xLeft(parent);
  var nPageY   = xPageY(parent) - (nTop == 0? 5: nTop);
  var nPageX   = xPageX(parent);
  var nH       = xHeight(div);
  var pH       = xHeight(parent);
  var nW       = xWidth(parent);
  var nClientH = xClientHeight() - 3;
  if (nClientH > 0) nClientH += xScrollTop();

  // Will the drop down display below or to the side of the parent
  if (sideAligned) pH = 0;
  else nW = 1;

  // Vertical placement
  var nDiff = 0;
  if (nPageY < 0) {
    nDiff += -nPageY;
  } else {
    nTmp = nClientH - (nPageY + nH + nTop);
    if (nTmp < 0) {
      nDiff = nTmp;
    }
  }

  if (nDiff != 0) {
    xTop(div, nPageY + nDiff + nTop - 16);
  }
  else {
    xTop(div, nPageY + nTop + pH);
  }

  xLeft(div, nPageX + nW);
}

function xSetTop(div, parent) {
  var nTop     = findPosY(parent) - ie_mac_y;
  var nLeft    = findPosX(parent) - ie_mac_x;

  var nH       = xHeight(div);
  var nW       = xWidth(parent)  - 3;
  var nClientH = xClientHeight() - 3;
  if (nClientH > 0) nClientH += xScrollTop();

  // Vertical placement
  nTmp = nClientH - (nTop + nH);
  if (nTmp < 0) {
      nTop = nTop + nTmp;
  }

  if (document.layers) {
    div.top  = nTop;
    div.left = nLeft + nW;
  } else {
    div.style.top  = nTop  + 'px';
    div.style.left = (nLeft + nW) + 'px';
  }
}

function findPosY(obj) {
	var curtop = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;

	return curtop;
}

function findPosX(obj) {
	var curLeft = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			curLeft += obj.offsetLeft
			obj      = obj.offsetParent;
		}
	}
	else if (obj.x)
		curLeft += obj.x;

	return curLeft;
}

// A call to this function displays the menu right aligned of the parent
function display(parent, divId) {
  displayMenu(parent, divId, true);
}

// A call to this function displays the menu below the parent
function displayBelow(parent, divId) {
  ie_mac_x = 206;
  ie_mac_y = 115;
  displayMenu(parent, divId, false);
  ie_mac_x = 7;
  ie_mac_y = 5;
}

function displayMenu(parent, divId, sideAligned) {
  KS_clearTimeout();
  showhideAllSelects(true);

  var div = getDiv(divId);
  if (lastDiv) { setDisplay(lastDiv, 'hidden'); }
  setDisplay(div, 'inherit');

  if (is_mac && is_ie5up) {
    xSetTop(div, parent);
  }
  else {
    setTop(div, parent, sideAligned);
  }

  lastDiv = div;
}

function xDef() {
  for (var i=0; i<arguments.length; ++i) {
    if (typeof(arguments[i]) == "undefined")
      return false;
  }

  return true;
}

function xHeight(e, uH) {
  if (! e) return 0;
  uH = e.offsetHeight;
  return uH;
}

function xWidth(e, uW) {
  if (! e) return 0;
  uW = e.offsetWidth;
  return uW;
}

function xClientHeight() {
	var h = 0;
    if (xDef(window.innerHeight, window.innerWidth, document.width)) {
		var h = window.innerHeight;
		if (document.width > window.innerWidth) h -= 16;
        return h;
	}

	if (!window.opera && document.documentElement && document.documentElement.clientHeight)
		return document.documentElement.clientHeight;
	
    if (document.body && document.body.clientHeight)
		return document.body.clientHeight;
	 
	return 0;
}

function xScrollTop() {
  if (xDef(window.pageYOffset))
    return window.pageYOffset;
  if (document.documentElement && document.documentElement.scrollTop)
    return document.documentElement.scrollTop;
  if (document.body && xDef(document.body.scrollTop))
    return document.body.scrollTop;
  return 0;
}

function xTop(e, iY) {
  if (! (e = xGetElementById(e))) return 0;
  if (xDef(iY))
    e.style.top = iY + "px";
  else {
    if (xDef(e.offsetTop))
      iY = e.offsetTop;
    else
      iY = parseInt(e.style.top);

    if (isNaN(iY))
      iY = 0;
  }

  return iY;
}

function xLeft(e, iX) {
  if (! (e = xGetElementById(e))) return 0;
  if (xDef(iX))
    e.style.left = iX + "px";
  else {
    if (xDef(e.offsetLeft))
      iX = e.offsetLeft;
    else
      iX = parseInt(e.style.left);

    if (isNaN(iX))
      iX = 0;
  }

  return iX;
}

function xPageY(e) {
  if ( !(e = xGetElementById(e)) ) return 0;
  var y = 0;
  while (e) {
    if (xDef(e.offsetTop)) y += e.offsetTop;
    else break;
    e = e.offsetParent;
  }
  return y;
}

function xPageX(e) {
  if ( !(e = xGetElementById(e)) ) return 0;
  var x = 0;
  while (e) {
    if (xDef(e.offsetLeft)) x += e.offsetLeft;
    else break;
    e = e.offsetParent;
  }
  return x;
}

function xGetElementById(e) {
  if (typeof(e) != "string") return e;
  if (document.getElementById)
    e = document.getElementById(e);
  else
    e = null;

  return e;
}

//------------------------------------------------------------------------------
function KS_clearTimeout() {
  if (ksHideMenuTimer) clearTimeout(ksHideMenuTimer);
  ksHideMenuTimer = null;
  ksDHFlag = false;
}

//------------------------------------------------------------------------------
function KS_startTimeout() {
  ksStart = new Date();
  ksDHFlag = true;
  ksHideMenuTimer = setTimeout("ksDoHide()", 1000);
}

//------------------------------------------------------------------------------
function ksDoHide() {
  if (! ksAutoHide) return;
  if (! ksDHFlag  ) return;

  var elapsed = new Date() - ksStart;
  if (elapsed < 1000) {
    ksHideMenuTimer = setTimeout("ksDoHide()", 1100-elapsed);
    return;
  }

  ksDHFlag = false;
  hideLast();
}

function noAutoHide() {
  ksAutoHide = false;
}

function autoHide() {
  ksAutoHide = true;
}

function onMenuItem () {
	KS_clearTimeout();
}


var hasHidden = false;
function showhideAllSelects(hide) {
    if (hide == hasHidden) return;
	var v = (hide)? 'hidden': 'visible';
    hasHidden = hide;

	showhideAllDocumentSelects(v, window.document);
	for (var i=0; i<window.frames.length; i++) {
	  showhideAllDocumentSelects(v, window.frames[i].document);
	  for (var j=0; j<window.frames[i].frames.length; j++) {
	    showhideAllDocumentSelects(v, window.frames[i].frames[j].document);
	    for (var k=0; k<window.frames[i].frames[j].frames.length; k++) {
	      showhideAllDocumentSelects(v, window.frames[i].frames[j].frames[k].document);
	    }
	  }
	}
}

function showhideAllDocumentSelects(hide, document) {
    var selects = document.getElementsByTagName('select');
    for (idx = 0; idx < selects.length; idx++) {
    	//If the kMenuNoHide property exists, then don't hide
		if(typeof selects[idx].kMenuNoHide == 'undefined') {
        	selects[idx].style.visibility = hide;    		
    	}
    }
}