var isDOM = (document.getElementById ? true : false); var isIE4 = ((document.all && !isDOM) ? true : false); var isNS4 = (document.layers ? true : false); //default values var menu = new Array(); var col = 0; var defOver = 'lightgreen', defBack = 'green'; var menuAcross = 0, menuDown = 0; var menuWidth = 95, menuHeight = 40; var menuOffsetX = 0, menuOffsetY = 1; var subMenuWidth = 180, subMenuHeight = 30; var subMenuOffsetX = 1, subMenuOffsetY = 0; var shadowX, shadowY; var shadowOffsetX = 3, shadowOffsetY = 3; // These two lines handle the window resize bug in NS4. See . // I recommend you leave this here as otherwise when you resize NS4's width menus are hidden. var popOldWidth = window.innerWidth; nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()'); function getRef(id) { if (isDOM) return document.getElementById(id); if (isIE4) return document.all[id]; if (isNS4) return document.layers[id]; } function getSty(id) { return (isNS4 ? getRef(id) : getRef(id).style); } // Hide timeout. var popTimer = 0; // Array showing highlighted menu items. var litNow = new Array(); function popOver(menuNum, itemNum) { clearTimeout(popTimer); hideAllBut(menuNum); litNow = getTree(menuNum, itemNum); changeCol(litNow, true); targetNum = menu[menuNum][itemNum].target; if (targetNum > 0) { thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left); thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top); with (menu[targetNum][0].ref) { left = parseInt(thisX + menu[targetNum][0].x); top = parseInt(thisY + menu[targetNum][0].y); visibility = 'visible'; } } } function popOut(menuNum, itemNum) { if ((menuNum == 0) && !menu[menuNum][itemNum].target) hideAllBut(0) else popTimer = setTimeout('hideAllBut(0)', 500); } function getTree(menuNum, itemNum) { // Array index is the menu number. The contents are null (if that menu is not a parent) // or the item number in that menu that is an ancestor (to light it up). itemArray = new Array(menu.length); while(1) { itemArray[menuNum] = itemNum; // If we've reached the top of the hierarchy, return. if (menuNum == 0) return itemArray; itemNum = menu[menuNum][0].parentItem; menuNum = menu[menuNum][0].parentMenu; } } // Pass an array and a boolean to specify colour change, true = over colour. function changeCol(changeArray, isOver) { for (menuCount = 0; menuCount < changeArray.length; menuCount++) { if (changeArray[menuCount]) { newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol; // Change the colours of the div/layer background. with (menu[menuCount][changeArray[menuCount]].ref) { if (isNS4) bgColor = newCol; else backgroundColor = newCol; } } } } function hideAllBut(menuNum) { var keepMenus = getTree(menuNum, 1); for (count = 0; count < menu.length; count++) if (!keepMenus[count]) menu[count][0].ref.visibility = 'hidden'; changeCol(litNow, false); } // *** MENU CONSTRUCTION FUNCTIONS *** function mainMenu(x, y) { // True or false - a vertical menu? this.isVert = false; // The popout indicator used (if any) for this menu. this.popInd = ''; // Position and size settings. this.x = x; this.y = y; this.width = menuHeight; // Colours of menu and items. this.overCol = defOver; this.backCol = defBack; // The stylesheet class used for item borders and the text within items. this.borderClass = ''; this.textClass = menuClass; // Parent menu and item numbers, indexed later. this.parentMenu = null; this.parentItem = null; // Reference to the object's style properties (set later). this.ref = null; } function subMenu() { // True or false - a vertical menu? this.isVert = true; // The popout indicator used (if any) for this menu. this.popInd = '>' // Position and size settings. this.x = subMenuOffsetX; this.y = menuHeight; this.width = subMenuWidth; // Colours of menu and items. this.overCol = defOver; this.backCol = defBack; // The stylesheet class used for item borders and the text within items. this.borderClass = 'itemBorder'; this.textClass = menuClass; // Parent menu and item numbers, indexed later. this.parentMenu = null; this.parentItem = null; // Reference to the object's style properties (set later). this.ref = null; } function mainItemLink(text, href, target, frame) { this.text = text; this.href = href; this.frame = frame; this.length = menuWidth; this.spacing = menuOffsetX; this.target = target; // Reference to the object's style properties (set later). this.ref = null; } function mainItem(text, target) { this.text = text; this.href = '#'; this.frame = ''; this.length = menuWidth; this.spacing = menuOffsetX; this.target = target; // Reference to the object's style properties (set later). this.ref = null; } function subItem(text, href, target) { this.text = text; this.href = href; this.frame = ''; this.length = subMenuHeight; this.spacing = subMenuOffsetY; this.target = target; // Reference to the object's style properties (set later). this.ref = null; } function item(text, href, frame, length, spacing, target) { this.text = text; this.href = href; this.frame = frame; this.length = length; this.spacing = spacing; this.target = target; // Reference to the object's style properties (set later). this.ref = null; } // ******************************************************** function writeMenus() { if (!isDOM && !isIE4 && !isNS4) return; for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) { // Variable for holding HTML for items and positions of next item. var str = '', itemX = 0, itemY = 0; // offset the sub menus down if desired if (currMenu != 0) { itemY = itemY + menuOffsetY; } // Remember, items start from 1 in the array (0 is menu object itself, above). // Also use properties of each item nested in the other with() for construction. for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) { var itemID = 'menu' + currMenu + 'item' + currItem; // The width and height of the menu item - dependent on orientation! var w = (isVert ? width : length); var h = (isVert ? length : width); // Create a div or layer text string with appropriate styles/properties. // Thanks to Paul Maden (www.paulmaden.com) for helping debug this in IE4, apparently // the width must be a miniumum of 3 for it to work in that browser. if (isDOM || isIE4) { //shadow shadowX = itemX + shadowOffsetX; shadowY = itemY + shadowOffsetY; str += '
' + '
'; //menu str += '
'; //menu str += ''; // Add contents of item (default: table with link inside). // In IE/NS6+, add padding if there's a border to emulate NS4's layer padding. // If a target frame is specified, also add that to the tag. str += '' + '' + ''; if (target > 0) { // Set target's parents to this menu item. menu[target][0].parentMenu = currMenu; menu[target][0].parentItem = currItem; // Add a popout indicator. if (popInd) str += ''; } str += '' + '
' + '

' + '' : '>') + text + '' + '

' + '		' + popInd + '
' + (isNS4 ? '' : '
'); if (isVert) itemY += length + spacing; else itemX += length + spacing; } if (isDOM) { var newDiv = document.createElement('div'); document.getElementsByTagName('body').item(0).appendChild(newDiv); newDiv.innerHTML = str; ref = newDiv.style; ref.position = 'absolute'; ref.left= itemX + 'px'; ref.top= itemY + 'px'; ref.visibility = 'hidden'; //ref.visibility = 'visible'; //for debugging } // Insert a div tag to the end of the BODY with menu HTML in place for IE4. if (isIE4) { document.body.insertAdjacentHTML('beforeEnd', ''); ref = getSty('menu' + currMenu + 'div'); } // In NS4, create a reference to a new layer and write the items to it. if (isNS4) { ref = new Layer(0); ref.document.write(str); ref.document.close(); } for (currItem = 1; currItem < menu[currMenu].length; currItem++) { itemName = 'menu' + currMenu + 'item' + currItem; if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName); if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName]; } //window.alert (str); //for debugging html string } with(menu[0][0]) { ref.left = x; ref.top = y; ref.visibility = 'visible'; } } function clickHandle(evt) { if (isNS4) document.routeEvent(evt); hideAllBut(0); }