var times = 0;
var isDOM = (document.getElementById ? true : false); 
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
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);
} 
var popTimer = 0;
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) {

itemArray = new Array(menu.length);

while(1) {
itemArray[menuNum] = itemNum;
if (menuNum == 0) return itemArray;
itemNum = menu[menuNum][0].parentItem;
menuNum = menu[menuNum][0].parentMenu;
   }
}

function changeCol(changeArray, isOver) {
for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
if (changeArray[menuCount]) {
newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
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);
}

function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) {
this.isVert = isVert;
this.popInd = popInd;
this.x = x;
this.y = y;
this.width = width;
this.overCol = overCol;
this.backCol = backCol;
this.borderClass = borderClass;
this.textClass = textClass;
this.parentMenu = null;
this.parentItem = null;
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;
this.ref = null;
}

function writeMenus() {
if (!isDOM && !isIE4 && !isNS4) return;

for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
var str = '', itemX = 0, itemY = 0;

for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) {
var itemID = 'menu' + currMenu + 'item' + currItem;

var w = (isVert ? width : length);
var h = (isVert ? length : width);

if (isDOM || isIE4) {
str += '<div id="' + itemID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit; ';
if (backCol) str += 'background: ' + backCol + '; ';
str += '" ';
}
if (isNS4) {
str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
if (backCol) str += 'bgcolor="' + backCol + '" ';
}
if (borderClass) str += 'class="' + borderClass + '" ';

str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';

str += '<table width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '"><tr><td align="left" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';
if (target > 0) {

menu[target][0].parentMenu = currMenu;
menu[target][0].parentItem = currItem;

if (popInd) str += '<td class="' + textClass + '" align="right">' + popInd + '</td>';
}
str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
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.visibility = 'hidden';
}

if (isIE4) {
document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
ref = getSty('menu' + currMenu + 'div');
}

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';
   }
}




function InitMenu(cor1,cor2,posX,posY) {	//#E7D7AE
	var tmpwidth = 0;

    this.defOver = cor1;
	this.defBack = cor2;
	this.menu = new Array();

	menu[0] = new Array();
	if ((screen.width == 800) && (screen.height == 600))
		menu[0][0] = new Menu(false, '', posX - 30, posY, 8, defOver, defOver, '', 'itemText');
	else if ((screen.width == 1024) && (screen.height == 768)) {
		tmpwidth = document.body.clientWidth;
		if (tmpwidth>=780) {
			menu[0][0] = new Menu(false, '', posX + 90 - (1024 - tmpwidth)/2, posY - 1, 8, defOver, defOver, '', 'itemText');
		} else {
			menu[0][0] = new Menu(false, '', posX - 30, posY - 1, 8, defOver, defOver, '', 'itemText');
		}
	}

	menu[0][1] = new Item('首页', 'index.htm', '_self', 50, 0, 0);
	menu[0][2] = new Item('新闻动态', 'news.htm', '_self', 80, 0, 0);
	menu[0][3] = new Item('公司介绍', 'company.htm', '_self', 80, 0, 0);
	menu[0][4] = new Item('产品介绍', 'product.htm', '_self', 80, 0, 0);
	menu[0][5] = new Item('技术服务', 'service.htm', '_self', 80, 0, 0);
	menu[0][6] = new Item('招聘信息', 'invite.htm', '_self', 80, 0, 0);
	menu[0][7] = new Item('留言版', '#', '_self', 50, 0, 0);

	menu[1] = new Array();
	menu[1][0] = new Menu(true, '>', 0, 15, 90, defBack, defBack, 'itemBorder', 'crazyText');
	menu[1][1] = new Item('<li>公司介绍</li>', 'Dr.htm', '_self', defLength, 0, 0);
	menu[1][2] = new Item('<li>公司产品</li>', 'board.htm', '_self', defLength, 0, 0);
	menu[1][3] = new Item('<li>公司业绩</li>', 'advisary.htm', '_self', defLength, 0, 0);

	menu[2] = new Array();
	menu[2][0] = new Menu(true, '>', 0, 15, 90, defBack, defBack, 'itemBorder', 'crazyText');
	menu[2][1] = new Item('<li>22221</li>', 'products and services.htm', '_self', defLength, 0, 0);
	menu[2][2] = new Item('<li>22222</li>', 'partners.htm', '_self', defLength, 0, 0);
	menu[2][3] = new Item('<li>22223</li>', 'experience.htm', '_self', defLength, 0, 0);
}

var defOver = "#FFFFFF", defBack = "#FFFFFF";
var defLength = 20;



function resize(xx) {
	var reposX,tmp;

	with(menu[0][0]) {
		if ((screen.width == 800) && (screen.height == 600)) {
			reposX = xx - 30;
		}
			
		else if ((screen.width == 1024) && (screen.height == 768)) {
			tmp = document.body.clientWidth;
			if (tmp>=780) {
				reposX = xx + 90 - (1024 - tmp)/2;
			} else {
				reposX = xx - 30;
			}
		}

//		alert(ref.left + '\n' + reposX);
		ref.left = reposX;
		ref.top = y;
		ref.visibility = 'visible';
   }
}


function changeSize(inX) {
	if (times%2==0) {
//		window.location.reload();
		resize(inX);
	}
	times++;
}

function OpenWindow(url) {
	var win = window.open(
		url, "applicationWindow",
		"directories=no,location=no,menubar=no,scrollbars=yes,"+
		"status=no,tollbar=no,resizable=yes,width=640,height=480"
	);	
	win.focus();
}

//window.onresize  = changeSize(290);

//-----------------------------------------Menu-Start-----------------------------------//

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];}
}

window.onLoad  = MM_preloadImages('./image/menu-red_r2_c1.gif','./image/menu-red_r3_c1.gif','./image/menu-red_r4_c1.gif','./image/menu-red_r5_c1.gif','./image/menu-red_r6_c1.gif','./image/menu-red_r7_c1.gif','./image/menu-red_r8_c1.gif');

//-----------------------------------------Menu-End-------------------------------------//