//Navigation functions // find out the browser version var isDOM = (document.getElementById ? true : false); var isIE4 = ((document.all && !isDOM) ? true : false); var isNS4 = (document.layers ? true : false); var isNS6 = ((!document.all) && (document.getElementById)) ? true : false; /* function getRef() get DOM reference */ function getRef(id){ if (isDOM) return document.getElementById(id); if (isIE4) return document.all[id]; if (isNS4) return document.layers[id]; } /* function getSty() get stle if needed */ function getSty(id){ return (isNS4 ? getRef(id) : getRef(id).style); } var popTimer = 0; var litNow = new Array(); // higlighted menu array // function popOver() 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() function popOut(menuNum, itemNum) { if ((menuNum == 0) && !menu[menuNum][itemNum].target) hideAllBut(0) else popTimer = setTimeout('hideAllBut(0)', 500); } // function getTree() function getTree(menuNum, itemNum) { itemArray = new Array(menu.length); // menu number 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; } } // function changeCol() // Pass an array and a boolean to specify colour change 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() 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); } // function Menu() // sets the parameters for the menu function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) { this.isVert = isVert; // vertical menu this.popInd = popInd // popput indicator this.x = x; // screen x position this.y = y; // screen y position this.width = width; // width this.overCol = overCol; // mouseover colour this.backCol = backCol; // background colour this.borderClass = borderClass; // border class this.textClass = textClass; // text class this.parentMenu = null; this.parentItem = null; this.ref = null; } // function Item() // sets the parameters for the object function Item(text, href, frame, length, spacing, target, style) { this.text = text; this.href = href; this.frame = frame; this.length = length; this.spacing = spacing; this.target = target; this.ref = null; this.style = style; } function writeMenus(a,b) { var wx=30; // Original variable to specify new menu spacing 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; for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) { var itemID = 'menu' + currMenu + 'item' + currItem; // CODE TO MOVE THE MENU TO THE X VALUE TO THE CENTRE OF THE SCREEN if (currMenu == 0){ var centre=a/2; itemX=itemX+centre; } // The width and height of the menu item - dependent on orientation! var w = (isVert ? width : length); var h = (isVert ? length : width); // div for ie if (isDOM || isIE4) { 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. //THIS CHANGES THE LINK STYLE IF BACKGROUND IS ORANGE if ((target > 0)&&(bg == 'orange')) style += '_grey'; str += ''; //str += '
' + ''; //if (target > 0) str += ''; str += text + '
'; 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 + 5; //THE NUMBER AT THE END PUTS A GAP BETWEEN THE MENU ITEMS else itemX += length + spacing; } // ie if (isDOM) { var newDiv = document.createElement('div'); document.getElementsByTagName('body').item(0).appendChild(newDiv); newDiv.innerHTML = str; ref = newDiv.style; ref.position = 'absolute'; ref.visibility = 'hidden'; } // Insert a div tag to the end of the BODY with menu HTML in place for IE4. if (isIE4) { // solid #DFE0EA 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]; } } with(menu[0][0]) { ref.left = x; ref.top = y; ref.visibility = 'visible'; } //THIS IS A FIX TO MAKE THE HIDDEN MENUS INITIALLY LOAD AT THE TOP OF THE PAGE with(menu[1][0]) { ref.left = 10; ref.top = 10; } } var menu = new Array(); // create new menu array // set the default values var defOver = '#FF9933', defBack = '#FFFFFF'; // defOver = '#CECDD3', defBack = '#ffffff'; var defLength = 23; //cell height; // resize fix for ns4 var popOldWidth = window.innerWidth; nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()'); // capture ns4 mouse clicks if (isNS4) document.captureEvents(Event.CLICK); document.onclick = clickHandle; // function clickHandle() function clickHandle(evt){ if (isNS4) document.routeEvent(evt); hideAllBut(0); } // function moveRoot() // moving command for the example. function moveRoot(){ with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5); } /**************************** end Navigation.js ****************************/