// 整个网站公用JS

//搜索提交
function searchgo()
{
	var classid=document.getElementById("classid").options[document.getElementById("classid").selectedIndex].value;
	var keywords=document.getElementById("keyword").value;
	var newhref = "/searchresult.asp?";
	if (classid!=0)
	{
		newhref += "classid="+classid+"&";
	}
	if (keywords!=""&&keywords!="不限")
	{
		newhref += "keywords="+escape(keywords)+"&";
	}
	else
	{
		alert ("请输入查询关键字！");
		return false;
	}
	window.location.href = newhref.substring(0,newhref.length-1);
}

//焦点图切换
function initfocus(focus_width,focus_height,text_height,divid)
{
var swf_height = focus_height+text_height;
var pics=document.getElementById("pics"+divid).value;
var links=document.getElementById("links"+divid).value;
var texts=document.getElementById("texts"+divid).value;
	
var FocusFlash = new sinaFlash("/images/pixviewer.swf", "focusflash", focus_width, swf_height, "7", "#B2ACA6", false, "High");
FocusFlash.addParam("allowScriptAccess", "sameDomain");
FocusFlash.addParam("menu", "false");
FocusFlash.addParam("wmode", "opaque");
FocusFlash.addVariable("pics", pics);
FocusFlash.addVariable("links", links);
FocusFlash.addVariable("texts", texts);
FocusFlash.addVariable("borderwidth", focus_width);
FocusFlash.addVariable("borderheight", focus_height);
FocusFlash.addVariable("textheight", text_height);
FocusFlash.write("focusViwer"+divid);
}

//下拉菜单
var menuOffX=0	//菜单距连接文字最左端距离
var menuOffY=18	//菜单距连接文字顶端距离
var vBobjects = new Array();
var fo_shadows=new Array()
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers

function MM_findObj(n, d) {
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 fetch_object(idname, forcefetch)
{
	if (typeof(vBobjects[idname]) == "undefined")
	{
		vBobjects[idname] = MM_findObj(idname);
	}
	return vBobjects[idname];
}
//showmenu vmenu:内容，允许为空,vmenuobj DIV数据ID，MOD 0=关闭浏览器自适应，用于版面导航菜单
function showmenu(e,vmenu,vmenuobj,mod){
	if (!document.all&&!document.getElementById&&!document.layers)
		return
	var which=vmenu;
	if (vmenuobj)
	{
		var MenuObj = fetch_object(vmenuobj);
		if (MenuObj)
		{
			which = MenuObj.innerHTML;
		}
	}
	if (!which)
	{
		return
	}
	clearhidemenu();
	ie_clearshadow();
	menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
	menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj
	if (ie4||ns6)
		menuobj.innerHTML=which
	else{
		menuobj.document.write('<layer name=gui bgcolor="#E6E6E6" width="165" onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
		menuobj.document.close()
	}
	menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
	menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
	eventX=ie4? event.clientX : ns6? e.clientX : e.x
	eventY=ie4? event.clientY : ns6? e.clientY : e.y
	var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
	var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY
	var getlength
		if (rightedge<menuobj.contentwidth){
			getlength=ie4? document.body.scrollLeft+eventX-menuobj.contentwidth+menuOffX : ns6? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
		}else{
			getlength=ie4? ie_x(event.srcElement)+menuOffX : ns6? window.pageXOffset+eventX : eventX
		}
		menuobj.thestyle.left=getlength+'px'
		if (bottomedge<menuobj.contentheight&&mod!=0){
			getlength=ie4? document.body.scrollTop+eventY-menuobj.contentheight-event.offsetY+menuOffY-23 : ns6? window.pageYOffset+eventY-menuobj.contentheight-10 : eventY-menuobj.contentheight
		}	else{
			getlength=ie4? ie_y(event.srcElement)+menuOffY : ns6? window.pageYOffset+eventY+10 : eventY
		}
	menuobj.thestyle.top=getlength+'px'
	menuobj.thestyle.visibility="visible"
	ie_dropshadow(menuobj,"#999999",3)
	return false
}

function ie_y(e){  
	var t=e.offsetTop;  
	while(e=e.offsetParent){  
		t+=e.offsetTop;  
	}  
	return t;  
}  
function ie_x(e){  
	var l=e.offsetLeft;  
	while(e=e.offsetParent){  
		l+=e.offsetLeft;  
	}  
	return l;  
}  
function ie_dropshadow(el, color, size)
{
	var i;
	for (i=size; i>0; i--)
	{
		var rect = document.createElement('div');
		var rs = rect.style
		rs.position = 'absolute';
		rs.left = (el.style.posLeft + i) + 'px';
		rs.top = (el.style.posTop + i) + 'px';
		rs.width = el.offsetWidth + 'px';
		rs.height = el.offsetHeight + 'px';
		rs.zIndex = el.style.zIndex - i;
		rs.backgroundColor = color;
		var opacity = 1 - i / (i + 1);
		rs.filter = 'alpha(opacity=' + (100 * opacity) + ')';
		//el.insertAdjacentElement('afterEnd', rect);
		fo_shadows[fo_shadows.length] = rect;
	}
}
function ie_clearshadow()
{
	for(var i=0;i<fo_shadows.length;i++)
	{
		if (fo_shadows[i])
			fo_shadows[i].style.display="none"
	}
	fo_shadows=new Array();
}


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

function hidemenu(){
	if (window.menuobj)
		menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"
	ie_clearshadow()
}

function dynamichide(e){
	if (ie4&&!menuobj.contains(e.toElement))
		hidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
		hidemenu()
}

function delayhidemenu(){
	if (ie4||ns6||ns4)
		delayhide=setTimeout("hidemenu()",500)
}

function clearhidemenu(){
	if (window.delayhide)
		clearTimeout(delayhide)
}
if (ie4||ns6)
document.onclick=hidemenu

//上传文件的选择
//objectid——选择后所影响对象的ID
//filetypelist——允许的文件类型
//filetype——文件的类型（0-其他，1-图片，2-音频或视频）
//maxsize——文件的最大大小，以K为单位
//upfileid——上传文件的ID
function selectfile(objectid,filetypelist,filetype,maxsize,upfileid)
{
	upfile = document.getElementById(upfileid);
	if (upfile.value!="")
	{
		FileExt = upfile.value.substr(upfile.value.lastIndexOf(".")).toLowerCase(); 
		if(filetypelist.indexOf(FileExt+"|")==-1)
		{
			alert("文件类型不正确！支持类型："+filetypelist.substr(0,filetypelist.length-1));
		}
		else
		{
			var fsize =0;
			if(filetype==1)
			{
				pageobject = document.getElementById(objectid);
				pageobject.src=upfile.value;
				var myImage = new Image();
				myImage.src = upfile.value;
				fsize = myImage.fileSize;
			}
			else
			{
				var fso,f;
				fso=new ActiveXObject("Scripting.FileSystemObject");  
				f=fso.GetFile(upfile.value);
				fsize = f.size; 
			}
			if(fsize>1024*maxsize)
			{
				alert("文件大小超过了"+maxsize+"K！");
			}
			else
			{
				if (filetype!=0)
				{
					pageobject = document.getElementById(objectid);
					switch (filetype)
					{
						case 1:
							pageobject.src=upfile.value;
							if(pageobject.width > 500)
							{
								pageobject.width = 500;
							}
							break;
						case 2:
							pageobject.filename=upfile.value;
							pageobject.autostart=1;
							break;
						default:
							break;
					}
				}
			}
		}
	}
}