//---------------------------------------------------------------------------------------------------------
//	DHTML JavaScript (ver 2.3)
//---------------------------------------------------------------------------------------------------------

//---------------------------------------------------------------------------------------------------------
//	Browser detection stuff
//  PHP Layers Menu 3.1.1 (C) 2001-2003 Marco Pratesi (marco at telug dot it)
//---------------------------------------------------------------------------------------------------------

DOM = (document.getElementById) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
// We need to explicitly detect Konqueror
// because Konqueror 3 sets IE = 1 ... AAAAAAAAAARGHHH!!!
Konqueror = (navigator.userAgent.indexOf("Konqueror") > -1) ? 1 : 0;
// We need to detect Konqueror 2.2 as it does not handle the window.onresize event
Konqueror22 = (navigator.userAgent.indexOf("Konqueror 2.2") > -1 || navigator.userAgent.indexOf("Konqueror/2.2") > -1) ? 1 : 0;
Opera = (navigator.userAgent.indexOf("Opera") > -1) ? 1 : 0;
Opera5 = (navigator.userAgent.indexOf("Opera 5") > -1 || navigator.userAgent.indexOf("Opera/5") > -1) ? 1 : 0;
Opera6 = (navigator.userAgent.indexOf("Opera 6") > -1 || navigator.userAgent.indexOf("Opera/6") > -1) ? 1 : 0;
Opera56 = Opera5 || Opera6;
IE = (navigator.userAgent.indexOf("MSIE") > -1) ? 1 : 0;
IE = IE && !Opera;
IE5 = IE && DOM;
IE4 = (document.all) ? 1 : 0;
IE4 = IE4 && IE && !DOM;


//-------------------------------------------------------------------------------------------------------
//	Show/ Hide menus
//-------------------------------------------------------------------------------------------------------
function show(group,item,imgId,imgBase,topnavid)
{
	if( !document.getElementById )
	{
		return;
	}

	menuCount	= eval("m_" + group);
	
	mainMenu	= document.getElementById("m" + group + "0");
	subMenu		= document.getElementById("m" + group + item);

	//	Does object exist?
	if( !subMenu )
	{
		//	No, don't process
		return false;
	}
	
	if( imgId != 'NULL' )
	{
		imgObj	= document.getElementById( imgId );
		imgObj.setAttribute( 'base', imgBase );
		imgObj.setAttribute( 'src', imgBase );
	}
	
	//	Position the menu based on the top nav'd position
	if ( topnavid )
	{
		subMenu.style.left = getOffsetLeft( topnavid ) + selectedit_topnav_item_margin_left +  'px';
		subMenu.style.top  = ( getOffsetTop( topnavid ) + getOffsetHeight( topnavid )) + 'px';
	}

	mainMenu.style.visibility	= "visible";

	if ((mainMenu != subMenu) && (item != 0))
	{
		subMenu.style.visibility	= "visible";
		for (i = 1; i <= menuCount; i++)
		{
			if (i != item)
			{
				document.getElementById("m" + group + i).style.visibility	= "hidden";
			}
		}
	}
}

//-------------------------------------------------------------------------------------------------------
//	Hide menu
//-------------------------------------------------------------------------------------------------------
function hide(group,item,imgId,imgBase)
{
	if(document.getElementById)
	{
		menuCount	= eval("m_" + group);

		//	Does object exist?
		if( !document.getElementById( "m" + group + menuCount ))
		{
			//	No, don't process
			return false;
		}
		
		if( imgId != 'NULL' )
		{
			imgObj	= document.getElementById( imgId );
			imgObj.setAttribute( 'base', imgBase );
			imgObj.setAttribute( 'src', imgBase );
		}
		
		if (item == 0)
		{
			startFrom	= 0;
		}
		else
		{
			startFrom	= 1;
		}
		for (i = startFrom; i <= menuCount; i++)
		{
			document.getElementById("m" + group + i).style.visibility	= "hidden";
		}
	}
}

//-------------------------------------------------------------------------------------------------------
//	Image swap
//-------------------------------------------------------------------------------------------------------
function swapImg(id,img)
{
	if( document.getElementById)
	{
		obj	= document.getElementById(id);
		obj.setAttribute( 'src', img );
	}
}

//-------------------------------------------------------------------------------------------------------
//	Redirect
//-------------------------------------------------------------------------------------------------------
function redirectTo( nav )
{
	//	Selected a url?
	dropdown	= nav.options;
	value		= dropdown[dropdown.selectedIndex].value;

	if ( value )
	{
		window.location.href = value;	
	}
}

//-------------------------------------------------------------------------------------------------------
//	Popup Window
//-------------------------------------------------------------------------------------------------------
function openpopup( id )
{
	//	Set the parameters
	url     = '/content' + id + '.html';
	target  = 'popupwindow' + id;
	sizeX   = 0;
	sizeY   = 0;
	leftpos	= 2000;
	toppos	= 2000;

	//	Open, focus the window
	winobject = open(url,target,"menubar=0,statusbar=0,scrollbars=1,toolbar=0,location=0,width=" + sizeX + ",height=" + sizeY + ",left=" + leftpos + ",top=" + toppos + ",resizable=0" );
	winobject.focus();
}

//-------------------------------------------------------------------------------------------------------
//	Goto a specific page
//-------------------------------------------------------------------------------------------------------
function gotopage( page_id )
{
	window.location = '/content' + page_id + '.html';
}

//-------------------------------------------------------------------------------------------------------
//	Element/window positioning functions
//  PHP Layers Menu 3.1.1 (C) 2001-2003 Marco Pratesi (marco at telug dot it)
//-------------------------------------------------------------------------------------------------------
//layerLeft = new Array();
//layerTop = new Array();

function setVisibility(layer,on) {
	if (on) {
		if (DOM) {
			document.getElementById(layer).style.visibility = "visible";
		} else if (NS4) {
			document.layers[layer].visibility = "show";
		} else {
			document.all[layer].style.visibility = "visible";
		}
	} else {
		if (DOM) {
			document.getElementById(layer).style.visibility = "hidden";
		} else if (NS4) {
			document.layers[layer].visibility = "hide";
		} else {
			document.all[layer].style.visibility = "hidden";
		}
	}
}

function isVisible(layer) {
	if (DOM) {
		return (document.getElementById(layer).style.visibility == "visible");
	} else if (NS4) {
		return (document.layers[layer].visibility == "show");
	} else {
		return (document.all[layer].style.visibility == "visible");
	}
}

function setLeft(layer,x) {
//layerLeft[layer] = x;
	if (DOM && !Opera5) {
		document.getElementById(layer).style.left = x + "px";
	} else if (Opera5) {
		document.getElementById(layer).style.left = x;
	} else if (NS4) {
		document.layers[layer].left = x;
	} else {
		document.all[layer].style.pixelLeft = x;
	}
}

function getOffsetLeft(eElement)
{
	eElement	= document.getElementById( eElement );

   if (!eElement && this)                    // if argument is invalid
   {                                         // (not specified, is null or is 0)
      eElement = this;                       // and function is a method
   }                                         // identify the element as the method owner

   var DL_bIE = document.all ? true : false; // initialize var to identify IE

   var nLeftPos = eElement.offsetLeft;       // initialize var to store calculations
   var eParElement = eElement.offsetParent;  // identify first offset parent element

   while (eParElement != null)
   {                                         // move up through element hierarchy

      if(DL_bIE)                             // if browser is IE, then...
      {
         if( (eParElement.tagName != "TABLE") && (eParElement.tagName != "BODY") )
         {                                   // if parent is not a table or the body, then...
            nLeftPos += eParElement.clientLeft; // append cell border width to calcs
         }
      }
      else                                   // if browser is Gecko, then...
      {
         if(eParElement.tagName == "TABLE")  // if parent is a table, then...
         {                                   // get its border as a number
            var nParBorder = parseInt(eParElement.border);
            if(isNaN(nParBorder))            // if no valid border attribute, then...
            {                                // check the table's frame attribute
               var nParFrame = eParElement.getAttribute('frame');
               if(nParFrame != null)         // if frame has ANY value, then...
               {
                  nLeftPos += 1;             // append one pixel to counter
               }
            }
            else if(nParBorder > 0)          // if a border width is specified, then...
            {
               nLeftPos += nParBorder;       // append the border width to counter
            }
         }
      }
      nLeftPos += eParElement.offsetLeft;    // append left offset of parent
      eParElement = eParElement.offsetParent; // and move up the element hierarchy
   }                                         // until no more offset parents exist
   return nLeftPos;                          // return the number calculated
}

function getOffsetTop(eElement)
{
	eElement	= document.getElementById( eElement );
   if (!eElement && this)                    // if argument is invalid
   {                                         // (not specified, is null or is 0)
      eElement = this;                       // and function is a method
   }                                         // identify the element as the method owner

   var DL_bIE = document.all ? true : false; // initialize var to identify IE

   var nTopPos = eElement.offsetTop;         // initialize var to store calculations
   var eParElement = eElement.offsetParent;  // identify first offset parent element

   while (eParElement != null)
   {                                         // move up through element hierarchy
      if(DL_bIE)                             // if browser is IE, then...
      {
         if( (eParElement.tagName != "TABLE") && (eParElement.tagName != "BODY") )
         {                                   // if parent a table cell, then...
            nTopPos += eParElement.clientTop; // append cell border width to calcs
         }
      }
      else                                   // if browser is Gecko, then...
      {
         if(eParElement.tagName == "TABLE")  // if parent is a table, then...
         {                                   // get its border as a number
            var nParBorder = parseInt(eParElement.border);
            if(isNaN(nParBorder))            // if no valid border attribute, then...
            {                                // check the table's frame attribute
               var nParFrame = eParElement.getAttribute('frame');
               if(nParFrame != null)         // if frame has ANY value, then...
               {
                  nTopPos += 1;              // append one pixel to counter
               }
            }
            else if(nParBorder > 0)          // if a border width is specified, then...
            {
               nTopPos += nParBorder;        // append the border width to counter
            }
         }
      }

      nTopPos += eParElement.offsetTop;      // append top offset of parent
      eParElement = eParElement.offsetParent; // and move up the element hierarchy
   }                                         // until no more offset parents exist
   return nTopPos;                           // return the number calculated
}


function setTop(layer,y) {
//layerTop[layer] = y;
	if (DOM && !Opera5) {
		document.getElementById(layer).style.top = y + "px";
	} else if (Opera5) {
		document.getElementById(layer).style.top = y;
	} else if (NS4) {
		document.layers[layer].top = y;
	} else {
		document.all[layer].style.pixelTop = y;
	}
}

function setWidth(layer,w) {
	if (DOM) {
		document.getElementById(layer).style.width = w;
	} else if (NS4) {
//		document.layers[layer].width = w;
	} else {
		document.all[layer].style.pixelWidth = w;
	}
}

function getOffsetWidth(layer) {
	var value = 0;
	if (DOM && !Opera56) {
		value = document.getElementById(layer).offsetWidth;
	} else if (NS4) {
		value = document.layers[layer].document.width;
	} else if (Opera56) {
		value = document.getElementById(layer).style.pixelWidth;
	} else {	// IE4 IS SIMPLY A BASTARD !!!
		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		value = document.all[layer].offsetWidth;
	}
	return (value);
}

function setHeight(layer,h) {	// unused, not tested
	if (DOM) {
		document.getElementById(layer).style.height = h;
	} else if (NS4) {
//		document.layers[layer].height = h;
	} else {
		document.all[layer].style.pixelHeight = h;
	}
}

function getOffsetHeight(layer) {
	var value = 0;
	if (DOM && !Opera56) {
		value = document.getElementById(layer).offsetHeight;
	} else if (NS4) {
		value = document.layers[layer].document.height;
	} else if (Opera56) {
		value = document.getElementById(layer).style.pixelHeight;
	} else {	// IE4 IS SIMPLY A BASTARD !!!
		if (document.all["IE4" + layer]) {
			layer = "IE4" + layer;
		}
		value = document.all[layer].offsetHeight;
	}
	return (value);
}

function getWindowWidth() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = top.innerWidth;
//	} else if (NS4) {
//		value = document.width;
	} else {	// IE
		if (document.documentElement && document.documentElement.clientWidth) {
			value = document.documentElement.clientWidth;
		} else if (document.body) {
			value = document.body.clientWidth;
		}
	}
	if (isNaN(value)) {
		value = top.innerWidth;
	}
	return (value);
}

function getWindowXOffset() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = window.pageXOffset;
	} else {	// IE
		if (document.documentElement && document.documentElement.scrollLeft) {
			value = document.documentElement.scrollLeft;
		} else if (document.body) {
			value = document.body.scrollLeft;
		}
	}
	return (value);
}

function getWindowHeight() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = top.innerHeight;
	} else {	// IE
		if (document.documentElement && document.documentElement.clientHeight) {
			value = document.documentElement.clientHeight;
		} else if (document.body) {
			value = document.body.clientHeight;
		}
	}
	if (isNaN(value)) {
		value = top.innerHeight;
	}
	return (value);
}

function getWindowYOffset() {
	var value = 0;
	if ((DOM && !IE) || NS4 || Konqueror || Opera) {
		value = window.pageYOffset;
	} else {	// IE
		if (document.documentElement && document.documentElement.scrollTop) {
			value = document.documentElement.scrollTop;
		} else if (document.body) {
			value = document.body.scrollTop;
		}
	}
	return (value);
}

function toggleGoogleStats( box_id )
{
	stats_box_table = document.getElementById( box_id );

	if ( !stats_box_table )
	{
		return;
	}

	if ( stats_box_table.style.display == 'block' )
	{
		stats_box_table.style.display = 'none';
	}
	else
	{
		stats_box_table.style.display = 'block';
	}
}