var disappeardelay = 250; // menu disappear speed onMouseout (in miliseconds)
var enableanchorlink = 0; // Enable or disable the anchor link when clicked
							// on? (1=e, 0=d)
var hidemenu_onclick = 1; // hide menu when user clicks within menu? (1=yes,
							// 0=no)

// ///No further editting needed

var ie5 = document.all;
var ns6 = document.getElementById && !document.all;

function getposOffset(what, offsettype) {
	var totaloffset = (offsettype == "left") ? what.offsetLeft : what.offsetTop;
	var parentEl = what.offsetParent;
	while (parentEl != null) {
		totaloffset = (offsettype == "left") ? totaloffset
				+ parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
		parentEl = parentEl.offsetParent;
	}
	return totaloffset;
}

function showhide(obj, e, visible, hidden) {
	if (ie5 || ns6)
		dropmenuobj.style.left = dropmenuobj.style.top = -500;
	if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover")
		obj.visibility = visible;
	else if (e.type == "click")
		obj.visibility = hidden;
}

function iecompattest() {
	return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement
			: document.body;
}

function clearbrowseredge(obj, whichedge) {
	var edgeoffset = 0;
	if (whichedge == "rightedge") {
		var windowedge = ie5 && !window.opera ? iecompattest().scrollLeft
				+ iecompattest().clientWidth - 15 : window.pageXOffset
				+ window.innerWidth - 15;
		dropmenuobj.contentmeasure = dropmenuobj.offsetWidth;
		if (windowedge - dropmenuobj.x < dropmenuobj.contentmeasure)
			edgeoffset = dropmenuobj.contentmeasure - obj.offsetWidth;
	} else {
		var topedge = ie5 && !window.opera ? iecompattest().scrollTop
				: window.pageYOffset;
		var windowedge = ie5 && !window.opera ? iecompattest().scrollTop
				+ iecompattest().clientHeight - 15 : window.pageYOffset
				+ window.innerHeight - 18;
		dropmenuobj.contentmeasure = dropmenuobj.offsetHeight;
		if (windowedge - dropmenuobj.y < dropmenuobj.contentmeasure) { // move
																		// up?
			edgeoffset = dropmenuobj.contentmeasure + obj.offsetHeight;
			if ((dropmenuobj.y - topedge) < dropmenuobj.contentmeasure) // up no
																		// good
																		// either?
				edgeoffset = dropmenuobj.y + obj.offsetHeight - topedge;
		}
	}
	return edgeoffset;
}
//纯显示亮背景
function showdownmenu(obj, e) {
	var manager=["m_main","m_product","m_solution","m_service","m_news","m_aboutus","m_zp","m_tm"];
	for(i=0;i<manager.length;i++){ 
		var id=obj.id;
		if(manager[i]==id){	
			var target= document.getElementById(id);
			target.style.background="url('images/nav-link.png') repeat-x";
//			target.style.color="black";
			for(j=0;j<manager.length;j++){ 
				var str=manager[j];
				if(str==id){ 
					continue;
				}else{ 
					var other=document.getElementById(str);
					other.style.background="url('images/nav.png') repeat-x";
//					other.style.color="#666";
				}
			}
		}else{
			continue;
		}
	}
}

//纯显示暗背景
function hiddendownmenu(obj, e) { 
//	var manager=["m_main","m_product","m_solution","m_service","m_news","m_aboutus","m_zp","m_tm"];
//	for(i=0;i<manager.length;i++){ 
		var id=obj.id; 
//		if(manager[i]==id){	
//			alert(id);
			var target= document.getElementById(id);
			target.style.background="url('images/nav.png')";
			target.style.fontSize="14px";
//			for(j=0;j<manager.length;j++){ 
//				var str=manager[j];
//				if(str==id){ 
//					continue;
//				}else{ 
//					var other=document.getElementById(str);
//					other.style.background="url('images/nav-link.png')";
//				}
//			}
//		}else{
//			continue;
//		}
//	}
}

function dropdownmenu(obj, e, dropmenuID) {
	var manager=["m_main","m_product","m_solution","m_service","m_news","m_aboutus","m_zp","m_tm"];
	for(i=0;i<manager.length;i++){ 
		var id=obj.id;
		if(manager[i]==id){	
			var target= document.getElementById(id);
			target.style.background="url('images/nav-link.png')";
			for(j=0;j<manager.length;j++){ 
				var str=manager[j];
				if(str==id){ 
					continue;
				}else{ 
					var other=document.getElementById(str);
					other.style.background="url('images/nav.png')";
				}
			}
		}else{
			continue;
		}
	}
	if (window.event)
		event.cancelBubble = true;
	else if (e.stopPropagation)
		e.stopPropagation();
	if (typeof dropmenuobj != "undefined") // hide previous menu
		dropmenuobj.style.visibility = "hidden";
	clearhidemenu();
	if (ie5 || ns6) {
		obj.onmouseout = delayhidemenu;
		dropmenuobj = document.getElementById(dropmenuID);
		if (hidemenu_onclick)
			dropmenuobj.onclick = function() {
				dropmenuobj.style.visibility = 'hidden';
			}
		dropmenuobj.onmouseover = clearhidemenu;
		dropmenuobj.onmouseout = ie5 ? function() {
			dynamichide(event)
		} : function(event) {
			dynamichide(event);
		}
		showhide(dropmenuobj.style, e, "visible", "hidden");
		dropmenuobj.x = getposOffset(obj, "left");
		dropmenuobj.y = getposOffset(obj, "top");
		dropmenuobj.style.left = dropmenuobj.x
				- clearbrowseredge(obj, "rightedge") + "px";
		dropmenuobj.style.top = dropmenuobj.y
				- clearbrowseredge(obj, "bottomedge") + obj.offsetHeight + "px";
	}
	return clickreturnvalue();
}

function clickreturnvalue() {
	if ((ie5 || ns6) && !enableanchorlink)
		return false;
	else
		return true;
}

function contains_ns6(a, b) {
	while (b.parentNode)
		if ((b = b.parentNode) == a)
			return true;
	return false;
}

function dynamichide(e) {
	if (ie5 && !dropmenuobj.contains(e.toElement))
		delayhidemenu()
	else if (ns6 && e.currentTarget != e.relatedTarget
			&& !contains_ns6(e.currentTarget, e.relatedTarget))
		delayhidemenu();
}

function delayhidemenu() {
	delayhide = setTimeout("dropmenuobj.style.visibility='hidden'",
			disappeardelay);
}

function clearhidemenu() {
	if (typeof delayhide != "undefined")
		clearTimeout(delayhide);
}