var domSMenu = null;
var oldDomSMenu = null;
var t = 0;
var lDelay = 3;
var lCount = 0;
var pause = 500;
var lCurMenuNum;
var isDHTML = 0;

var bitControlsHidden = 0;
var isWindows = 0;

if (navigator.platform.indexOf ("Win32") != -1 )
       { isWindows = 1;}
       
function popMenu(menuNum){
	if (isDHTML) {
	
		if (bitControlsHidden == 0  && isWindows ==1)
		{
			var i;
			i=0;
			while (i < document.forms[0].elements.length)
			{
				if (document.forms[0].elements[i].type == 'select-one') document.forms[0].elements[i].style.visibility='hidden';				
				i++;
			}
			bitControlsHidden=1;
		}
		
		///// Defines the DOMs	of the menu objects
		var idMenu = 'menuHeader';
		var domMenu = findDOM(idMenu,0);

		var idMenuOpt = 'menuHead' + menuNum;
		var domMenuOpt = findDOM(idMenuOpt,0);		

		var idSMenu = 'menu' + menuNum;
		domSMenu = findDOM(idSMenu,1);
		var domSubStyle = findDOM(idSMenu,0);
		
			t = 2; 
			if ((oldDomSMenu)) {
					if(oldDomSMenu != domSMenu){
					oldDomSMenu.visibility = 'hidden'; 
					oldDomSMenu.zIndex = '0'; 	
					t = 2; 
					lCount = 0;
					}
			}
	
	lCurMenuNum=menuNum;

///// Defines the positions of the sub-menus
		if (isID || isAll) { 	
				var menuLeft = (DL_GetElementLeft(domMenuOpt));
				var menuTop = ((DL_GetElementTop(domMenuOpt) - parseInt(domSubStyle.offsetHeight)));
				//alert(domSubStyle.offsetWidth);
				//var menuWidth = domSubStyle.offsetWidth;
				//alert(menuTop);
				//(parseInt(domSMenu.height))*-1;
				}
			if (isLayers) {
					var menuLeft = document.layers[idMenu].layers[idMenuOpt].pageX;
					var menuTop = domMenu.pageY + domMenu.clip.height;
			}
///// Positions and shows the menu
		if (oldDomSMenu != domSMenu) {	
			domSMenu.left = menuLeft; 
			domSMenu.top = menuTop;
			//domSMenu.width = menuWidth;
			domSMenu.visibility = 'visible';
			domSMenu.zIndex = '1900';
			oldDomSMenu = domSMenu;;
		}
	}

////// Returns a 'null' value for non-DHTML Browsers 
	else { return null; }
}

function delayHide() {
///// Checks to see if there is a menu showing and whether 
///// the global variable 't' has been set to 0
    if ((oldDomSMenu) && (t == 0)) {

///// Hides the old menu, resets menu conditions, 
///// and stops the function running
        oldDomSMenu.visibility = 'hidden'; 
        oldDomSMenu.zIndex = '0';
        oldDomSMenu = null;
        lCount = 0; 
        return false;
    }

///// Interupts the function if another menu is opened
    if (t == 2) { lCount = 0; return false; }

///// Repeats the function adding 1 to lCount each time until 
///// lCount is equal to lDelay and then sets 't' to 0 so that 
///// the menu will hide when it runs again
    if (t == 1) { 
        lCount = lCount + 1;
        if (lDelay = lCount) { t = 0; }
        //if (lDelay > lCount) { setTimeout('delayHide()',pause); }
        setTimeout('delayHide()',pause);
    }
}
function DL_GetElementLeft(eElement)
{
    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
        nLeftPos += eParElement.offsetLeft;      // appending left offset of each parent
        eParElement = eParElement.offsetParent;  // until no more offset parents exist
    }
    return nLeftPos;                             // return the number calculated
}
function DL_GetElementTop(eElement)
{
    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
        nTopPos += eParElement.offsetTop;        // appending top offset of each parent
        eParElement = eParElement.offsetParent;  // until no more offset parents exist
    }
    return nTopPos;                              // return the number calculated
}

function popMenuDown(menuNum){
	if (isDHTML) {
		///// Defines the DOMs	of the menu objects
		var idMenu = 'menuHeader';
		var domMenu = findDOM(idMenu,0);

		var idMenuOpt = 'menuHead' + menuNum;
		var domMenuOpt = findDOM(idMenuOpt,0);		

		var idSMenu = 'menu' + menuNum;
		domSMenu = findDOM(idSMenu,1);
		var domSubStyle = findDOM(idSMenu,0);
		
		////hides windows controls
		if (bitControlsHidden == 0  && isWindows ==1)
		{
			var i;
			i=0;
			while (i < document.forms[0].elements.length)
			{
				if (document.forms[0].elements[i].type == 'select-one') document.forms[0].elements[i].style.visibility='hidden';				
				i++;
			}
			bitControlsHidden=1;
		}
		
			t = 2; 
			if ((oldDomSMenu)) {
					if(oldDomSMenu != domSMenu){
					oldDomSMenu.visibility = 'hidden'; 
					oldDomSMenu.zIndex = '0'; 	
					t = 2; 
					lCount = 0;
					}
			}
	
	lCurMenuNum=menuNum;
	
///// Defines the positions of the sub-menus
		if (isID || isAll) { 	
				var menuLeft = (DL_GetElementLeft(domMenuOpt));
				var menuTop = (DL_GetElementTop(domMenuOpt)+domMenuOpt.offsetHeight);
				//alert(domSubStyle.offsetWidth);
				//var menuWidth = domSubStyle.offsetWidth;
				//alert(domMenuOpt.offsetHeight);
				//(parseInt(domSMenu.height))*-1;
				}
			if (isLayers) {
					var menuLeft = document.layers[idMenu].layers[idMenuOpt].pageX;
					var menuTop = domMenu.pageY + domMenu.clip.height;
			}
///// Positions and shows the menu
		if (oldDomSMenu != domSMenu) {	
			domSMenu.left = menuLeft; 
			domSMenu.top = menuTop;
			//domSMenu.width = menuWidth;
			domSMenu.visibility = 'visible';
			domSMenu.zIndex = '1900';
			oldDomSMenu = domSMenu;;
		}
	}

////// Returns a 'null' value for non-DHTML Browsers 
	else { return null; }
}

function delayHide() {
///// Checks to see if there is a menu showing and whether 
///// the global variable 't' has been set to 0
    if ((oldDomSMenu) && (t == 0)) {

///// Hides the old menu, resets menu conditions, 
///// and stops the function running
        oldDomSMenu.visibility = 'hidden'; 
        oldDomSMenu.zIndex = '0';
        oldDomSMenu = null;
        lCount = 0; 
        
        ////shows windows controls again
		if (bitControlsHidden == 1 && isWindows == 1)
		{
			var i;
			i=0;
			while (i < document.forms[0].elements.length)
			{
				if (document.forms[0].elements[i].type == 'select-one') document.forms[0].elements[i].style.visibility='visible';
				i++
			}
			bitControlsHidden=0;
		}
			
        return false;
    }


			
///// Interupts the function if another menu is opened
    if (t == 2) { lCount = 0; return false; }

///// Repeats the function adding 1 to lCount each time until 
///// lCount is equal to lDelay and then sets 't' to 0 so that 
///// the menu will hide when it runs again
    if (t == 1) { 
        lCount = lCount + 1;
        if (lDelay = lCount) { t = 0; }
        //if (lDelay > lCount) { setTimeout('delayHide()',pause); }
        setTimeout('delayHide()',pause);
    }
}