// Dropdown menu design by James Austin (http://www.james-austin.co.uk/)
// Most of the Javascript is from his code

var timeOn = null
numMenus = 5;
//document.onmouseover = hideAllMenus;
document.onclick = hideAllMenus;
window.onerror = null;

hideAllMenus();




// MENU MOUSE OVER 
function menuOver(itemName)
// Reset the time and set menuActive to true
{
	clearTimeout(timeOn)
	menuActive = 1
}

// MENU MOUSE OUT 
function menuOut(itemName)
// Menu is not active (set to false) and start a timer to close the menu
{
	//if(document.layers)
	//{
 		menuActive = 0 
 		timeOn = setTimeout("hideAllMenus()", 2000) 		
	//}
}

// SET BACKGROUND COLOR 
function getImage(name)
{
	if (document.layers)
	{
		return findImage(name, document);
	}
	return null;
}

function findImage(name, doc) {
  var i, img;
  for (i = 0; i < doc.images.length; i++)
    if (doc.images[i].name == name)
      return doc.images[i];
  for (i = 0; i < doc.layers.length; i++)
    if ((img = findImage(name, doc.layers[i].document)) != null) {
      img.container = doc.layers[i];
      return img;
    }
  return null;
}
function getImagePageLeft(img) {

  var x, obj;
  if (document.layers) {
    if (img.container != null)
      return img.container.pageX + img.x;
    else
      return img.x;
  }
  return -1;
}

function getImagePageTop(img) {
  var y, obj;
  if (document.layers) {
    if (img.container != null)
      return img.container.pageY + img.y;
    else
      return img.y;
  }
  return -1;
}

//document.write('<style> .menu{position: absolute;}</style>');


function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	//we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility

function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

function currentOpac(id, opacEnd, millisec) {
    //standard opacity is 100
    var currentOpac = 100;
    
    //if the element has an opacity set, get it
    var styleObject = getStyleObject(id);
    if(styleObject.opacity < 100) {
        currentOpac = styleObject.opacity * 100;
    }

    //call for the function that changes the opacity
    opacity(id, currentOpac, opacEnd, millisec)
} 

//change the opacity for different browsers
function changeOpac(opacity, id) {
    var styleObject = getStyleObject(id);
    styleObject.opacity = (opacity / 100); 
    styleObject.MozOpacity  = (opacity / 100); 
    styleObject.KhtmlOpacity  = (opacity / 100); 
    styleObject.filter  = "alpha(opacity=" + opacity + ")";
} 

function showMenu(menuNumber, eventObj, labelID) {
    hideAllMenus();
	if(document.layers) {
		img = getImage("Image" + menuNumber);
	 	x = getImagePageLeft(img);
	 	y = getImagePageTop(img);
	 	menuTop = y + 10; // LAYER TOP POSITION
		eval('document.layers["menu'+menuNumber+'"].top="'+menuTop+'"');
	 	eval('document.layers["menu'+menuNumber+'"].left="'+x+'"');
	}
	eventObj.cancelBubble = true;
    	
	var menuId = 'menu' + menuNumber;     
    currentOpac(menuId,1,0);    
    changeObjectVisibility(menuId, 'visible')
    currentOpac(menuId,100,400);
    return true;
    
   //if(changeObjectVisibility(menuId, 'visible')) {
	//return true;
    //} else {
//	return false;
    //}
}

function hideAllMenus() {
    for(counter = 1; counter <= numMenus; counter++) {	
	currentOpac('menu' + counter, 0,100);
	changeObjectVisibility('menu' + counter, 'hidden');
    }
}

function hideThisMenu(id) {
	currentOpac('menu' + id,0,100);
	changeObjectVisibility('menu' + id, 'hidden');
}

function moveObject(objectId, newXCoordinate, newYCoordinate) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.left = newXCoordinate;
	styleObject.top = newYCoordinate;
	return true;
    } else {
	// we couldn't find the object, so we can't very well move it
	return false;
    }
} // moveObject

// ***********************
// hacks and workarounds *
// ***********************

// initialize hacks whenever the page loads
window.onload = initializeHacks;

// setup an event handler to hide popups for generic clicks on the document
function initializeHacks() {
    // this ugly little hack resizes a blank div to make sure you can click
    // anywhere in the window for Mac MSIE 5
    if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
	&& (navigator.platform.indexOf('Mac') != -1)
	&& getStyleObject('blankDiv')) {
	window.onresize = explorerMacResizeFix;
    }
    resizeBlankDiv();
    // this next function creates a placeholder object for older browsers
    createFakeEventObj();
}

function createFakeEventObj() {
    // create a fake event object for older browsers to avoid errors in function call
    // when we need to pass the event object to functions
    if (!window.event) {
	window.event = false;
    }
} // createFakeEventObj

function resizeBlankDiv() {
    // resize blank placeholder div so IE 5 on mac will get all clicks in window
    if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
	&& (navigator.platform.indexOf('Mac') != -1)
	&& getStyleObject('blankDiv')) {
	getStyleObject('blankDiv').width = document.body.clientWidth - 20;
	getStyleObject('blankDiv').height = document.body.clientHeight - 20;
    }
}

function explorerMacResizeFix () {
    location.reload(false);
}

function mClk(src){ 
	if(event.srcElement.tagName=='TD')
		src.children.tags('A')[0].click();
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}