/*
pullMenu 类 - xyg -2007/3/20
接口 ： 
	1、pullMenu.openMenu(参数1,参数2,参数3), 参数1为下拉菜单的宽度为int型,
	   参数2为下拉菜单的内容 ,是数组型的,JSON方法定义此参数，例：
		var one_Links = [
			{	txt	: 'menu_1',
				href: '#menu_1'	
			},
			{
				txt	: 'menu_2',
				href: '#menu_2'
			},
			{
				txt	: 'menu_3',
				href: '#menu_3'
			},
			{
				txt : 'menu_4',
				href: '#menu_4'
			}
		];
	参数3则是要创建下拉菜单的元素为Object型
	2、closeMenu(参数)关闭菜单 参数为要创建下拉菜单的元素为Object型
*/

var pullMenu = {
	obj : null,
	openMenu : function (iWidth,aLinks,o){
		if(this.obj){return;}
		if (!(o.contains(event.fromElement))){
			o.style.position = 'relative';
			var oMenuBox = document.createElement("div");
			oMenuBox.className = "pullMenu_menuBox";
			oMenuBox.style.position = 'absolute';
			oMenuBox.style.zIndex = 10;
			oMenuBox.style.padding = '2px';
			oMenuBox.style.width = iWidth;
			oMenuBox.style.top = o.offsetHeight;
			oMenuBox.style.left = 0;


			o.appendChild(oMenuBox);
			oMenuBox.onmouseout = function (){
				if(this.obj){
					if(!(o.contains(event.toElement))){
						oMenuBox.parentNode.removeChild(oMenuBox);
						this.obj = null;
					}					
				}
			}
			for(i=0;i<aLinks.length;i++){
				var menuUnit = document.createElement("div");
				menuUnit.className = 'pullMenu_menuUnit';
				oMenuBox.appendChild(menuUnit);
				menuUnit.innerHTML = '<a  href='+aLinks[i].href+'>'+aLinks[i].txt+'</a>';
			}
			this.obj = oMenuBox;
		}		 
	},
	closeMenu : function (o){
		if(this.obj){
		if (!(o.contains(event.toElement))){
				o.removeChild(this.obj);
				this.obj = null;
		}
		}
	}
}

//***********默认设置定义.*********************
tPopWait=50;                //停留tWait豪秒后显示提示。
tPopShow=6000;                //显示tShow豪秒后关闭提示
showPopStep=20;
popOpacity=95;
fontcolor="#333333";
bgcolor="#f7f7f7";
bordercolor="#188EAC";

//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css'id='defaultPopStyle'>");
document.write(".cPopText {  background-color: " + bgcolor + ";color:" + fontcolor + "; border: 1px " + bordercolor + " solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
document.write("</style>");
document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");


function showPopupText(){
var o=event.srcElement;
        MouseX=event.x;
        MouseY=event.y;
        if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
        if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
        if(o.dypop!=sPop) {
                        sPop=o.dypop;
                        clearTimeout(curShow);
                        clearTimeout(tFadeOut);
                        clearTimeout(tFadeIn);
                        clearTimeout(tFadeWaiting);        
                        if(sPop==null || sPop=="") {
                                dypopLayer.innerHTML="";
                                dypopLayer.style.filter="Alpha()";
                                dypopLayer.filters.Alpha.opacity=0;        
                                }
                        else {
                                if(o.dyclass!=null) popStyle=o.dyclass 
                                        else popStyle="cPopText";
                                curShow=setTimeout("showIt()",tPopWait);
                        }
                        
        }
}

function showIt(){
                dypopLayer.className=popStyle;
                dypopLayer.innerHTML=sPop;
                popWidth=dypopLayer.clientWidth;
                popHeight=dypopLayer.clientHeight;
                if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
                        else popLeftAdjust=0;
                if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
                        else popTopAdjust=0;
                dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
                dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
                dypopLayer.style.filter="Alpha(Opacity=0)";
                fadeOut();
}

function fadeOut(){
        if(dypopLayer.filters.Alpha.opacity<popOpacity) {
                dypopLayer.filters.Alpha.opacity+=showPopStep;
                tFadeOut=setTimeout("fadeOut()",1);
                }
                else {
                        dypopLayer.filters.Alpha.opacity=popOpacity;
                        tFadeWaiting=setTimeout("fadeIn()",tPopShow);
                        }
}

function fadeIn(){
        if(dypopLayer.filters.Alpha.opacity>0) {
                dypopLayer.filters.Alpha.opacity-=1;
                tFadeIn=setTimeout("fadeIn()",1);
                }
}
document.onmouseover=showPopupText;