// JScript ファイル
function openLayer(objId,conId)
{
    var arrayPageSize   = getPageSize();//调用getPageSize()函数
    var arrayPageScroll = getPageScroll();//调用getPageScroll()函数
    
    if (!document.getElementById("popupAddr"))
    {	
        //创建弹出内容层			
	    var popupDiv = document.createElement("div");
	    //给这个元素设置属性与样式

	    popupDiv.setAttribute("id","popupAddr")
	    popupDiv.style.position = "absolute";
	    popupDiv.style.border = "1px solid #ccc";
	    popupDiv.style.background = "#fff";
	    popupDiv.style.zIndex = 99;

	    //创建弹出背景层

	    var bodyBack = document.createElement("div");
	    bodyBack.setAttribute("id","bodybg")
	    bodyBack.style.position = "absolute";
	    bodyBack.style.width = arrayPageSize[2] + 'px';
	    bodyBack.style.height = arrayPageSize[1] + 'px';
	    bodyBack.style.zIndex = 98;
	    bodyBack.style.top = 0;
	    bodyBack.style.left = 0;

	    bodyBack.style.filter = "alpha(opacity=50)";
	    bodyBack.style.opacity = 0.5;
	    bodyBack.style.background = "#ddf";

	    //实现弹出(插入到目标元素之后)
	    var mybody = document.getElementById(objId);
	    insertAfter(popupDiv,mybody);//执行函数insertAfter()
	    insertAfter(bodyBack,mybody);//执行函数insertAfter()
	}
	//显示背景层

    document.getElementById("bodybg").style.display = "";
    //显示内容层

    var popObj=document.getElementById("popupAddr")
    popObj.innerHTML = document.getElementById(conId).innerHTML;
    popObj.style.display = "";

    var arrayConSize=getConSize(conId)
    popObj.style.top  = arrayPageScroll[1] + 10 + 'px';
    
    if(arrayPageSize[0]<arrayPageSize[2])
    {
        popObj.style.left = (arrayPageSize[2] - arrayPageSize[0] - arrayConSize[0]) / 2 + 310 + 'px';
    }
    else
    {
        popObj.style.left = (arrayPageSize[0] - arrayConSize[0]) / 2 - 340 + 'px';
    }
    //popObj.style.left = (arrayPageSize[2] - arrayPageSize[0] - arrayConSize[0]) / 2 + 210 + 'px';
}

//获取内容层内容原始尺寸
function getConSize(conId)
{
    var conObj=document.getElementById(conId)
    conObj.style.position = "absolute";
    conObj.style.left=-1000+"px";
    conObj.style.display="";
    var arrayConSize=[conObj.offsetWidth,conObj.offsetHeight]
    conObj.style.display="none";
    return arrayConSize;
}

//插入
function insertAfter(newElement,targetElement)
{
    var parent = targetElement.parentNode;
	
    if(parent.lastChild == targetElement)
    {
    parent.appendChild(newElement);
    }
    else{
	    parent.insertBefore(newElement,targetElement.nextSibling);
    }
}

//获取滚动条的高度
function getPageScroll(){
    var yScroll;
	
    if (self.pageYOffset)
    {
	    yScroll = self.pageYOffset;
    } 
    else if (document.documentElement && document.documentElement.scrollTop)
    {
	    yScroll = document.documentElement.scrollTop;
    } 
    else if (document.body)
    {
	    yScroll = document.body.scrollTop;
    }
    
    arrayPageScroll = new Array('',yScroll)
    return arrayPageScroll;
}

//获取页面实际大小

function getPageSize()
{
    var xScroll,yScroll;

    if (window.innerHeight && window.scrollMaxY)
    {
	    xScroll = document.body.scrollWidth;
	    yScroll = window.innerHeight + window.scrollMaxY;
    } 
    else if (document.body.scrollHeight > document.body.offsetHeight)
    {
	    xScroll = document.body.scrollWidth;
	    yScroll = document.body.scrollHeight;
    } 
    else 
    {
	    xScroll = document.body.offsetWidth;
	    yScroll = document.body.offsetHeight;
    }

    var windowWidth,windowHeight;
    //var pageHeight,pageWidth; 
    if (self.innerHeight) 
    {
	    windowWidth = self.innerWidth;
	    windowHeight = self.innerHeight;
    } 
    else if (document.documentElement && document.documentElement.clientHeight) 
    {
	    windowWidth = document.documentElement.clientWidth;
	    windowHeight = document.documentElement.clientHeight;
    } 
    else if (document.body) 
    {
	    windowWidth = document.body.clientWidth;
	    windowHeight = document.body.clientHeight;
    }

    var pageWidth,pageHeight
	
    if(yScroll < windowHeight)
    {
	    pageHeight = windowHeight;
    } 
    else 
    {
	    pageHeight = yScroll;
    }
	
    if(xScroll < windowWidth) 
    {
	    pageWidth = windowWidth;
    } 
    else 
    {
	    pageWidth = xScroll;
    }
    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
    return arrayPageSize;
}