utility.js

是一个简易的聊天系统

		}

	return re;
}



//传回国历 y年某m+1月的天数
function solarDays(y,m) {

	var solarMonth=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
   if(m==1)
      return(((y%4 == 0) && (y%100 != 0) || (y%400 == 0))? 29: 28)
   else
      return(solarMonth[m])
}




function NextPage(objSelf,url,func)
{
	this.obj=objSelf;
	this.url=url;
	this.func=func;
	}
NextPage.prototype.AllPage=0;//总页数
NextPage.prototype.CurrPage=0;//当前页码
NextPage.prototype.PageSize=15;//单页数

NextPage.prototype.begin=function(pIndex,data)
{
	
	if(data)
	{
		this.data=data;
		this.data+='&PageSize='+this.PageSize;
		this.data+='&allCount=1';
	}
	
	switch(pIndex)
	{
		case -1://最后一页
		pIndex=this.AllPage;
		break;
		case -2://上一页
		pIndex=this.CurrPage-1;
		break;
		case -3://下一页
		pIndex=this.CurrPage+1;
		break;
		case undefined://空值回到首页
		pIndex=this.CurrPage;
		break;
	}
	if(pIndex<1 || (pIndex>this.AllPage && this.AllPage>0))return;//防止翻页翻过头

	this.CurrPage=pIndex;//设置当前页

	var d=this.data+'&PageIndex='+ pIndex;
	Msg.Show('   <img src="../system/loading.gif" align="absmiddle" />正在获取数据中');
	xmlHttp=CreateXmlHttp("POST",this.url,true);
	xmlHttp.setRequestHeader("Content-Length",d.length);  
	xmlHttp.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded");
	obj=this;
	xmlHttp.onreadystatechange = function(){obj.end(obj);};
	xmlHttp.send(d);
}

NextPage.prototype.end=function(o)
{
	if(xmlHttp.readyState!=4)return;
	
	var re=xmlHttp.status;
	switch(re)
	{
		case 711:
		parent.OpenWin.Login();
		Msg.Close();
		return;
		case 712:
		Msg.timeClose(xmlHttp.responseText,3);
		return;
	}

	var node=xmlHttp.responseXML;
	if(node.getElementsByTagName("Total")[0])
		o.AllPage=Math.ceil(node.getElementsByTagName("Total")[0].childNodes[0].data/o.PageSize);

	var getValue=function(id,i)
	{
		return (node.getElementsByTagName(id)[i].childNodes[0]) ? node.getElementsByTagName(id)[i].childNodes[0].data :'无';
	}
	
	var re=/￡/ig ;
	re.multiline = true;
	
	eval(this.func);

	var iner='';
	for(var i=1;i<=o.AllPage;i++)
		iner+='<a href="#"  '+(o.CurrPage==i ? 'style="font-weight:bold"' : '')+' onclick="'+o.obj+'.begin('+i+');">'+i+'</a> ';
	document.getElementById('Onces_'+o.id).innerHTML=iner;
	
	Msg.Close();
}
NextPage.prototype.Link=function(id)
{
	this.id=id;
	return '<a href="#" onclick="'+this.obj+'.begin(1);">首页</a> <a href="#" onclick="'+this.obj+'.begin(-2);">上一页</a> <span id="Onces_'+id+'"></span> <a href="#" onclick="'+this.obj+'.begin(-3);">下一页</a> <a href="#" onclick="'+this.obj+'.begin(-1);">尾页</a>';
}

 











function setTitle(v,a)
{
	if(a!=null)v=document.title +a;
	document.title =v;
	//document.getElementById('ContentTitle').innerHTML=v;
}




/*键盘监听
			KeyBoard.AddEventListener("x",function(){alert('test');},{altKey:true});
			KeyBoard.BeginListener();
*/
var KeyBoard={
	ListenerCollection:new Object(),
	AddEventListener:function(keyCode,fun,ctrlKeyState){		
		if(typeof(keyCode)=="number")keyCode=String.fromCharCode(keyCode).toUpperCase();
		else keyCode=keyCode.toUpperCase();
		this.ListenerCollection["f"+keyCode]=fun;
		this.ListenerCollection["c"+keyCode]=ctrlKeyState;			
	},
	RemoveEventListener:function(keyCode){
		if(this.ListenerCollection["f"+keyCode])delete this.ListenerCollection["f"+keyCode];
		if(this.ListenerCollection["c"+keyCode])delete this.ListenerCollection["c"+keyCode];
	},
	KeyCheck:function(){
		if(!IsIE())event=SearchEvent();
		var kCode=String.fromCharCode(IsIE()?event.keyCode:event.which).toUpperCase();					
		if(KeyBoard.ListenerCollection["f"+kCode]){
			var keyState=KeyBoard.ListenerCollection["c"+kCode];
			if(keyState){
				if(keyState.ctrlKey)if(!event.ctrlKey)return false;
				if(keyState.shiftKey)if(!event.shiftKey)return false;
				if(keyState.altKey)if(!event.altKey)return false;
			}
			try{KeyBoard.ListenerCollection["f"+kCode]();}catch(ex){throw("Delegate Method Fail");}
		}
	},
	BeginListener:function(){
		AddEventListener(document,"onkeydown",this.KeyCheck);
	},
	EndListener:function(){
		RemoveEventListener(document,"onkeydown",this.KeyCheck);
	}
}
///////////////end键盘事件




//处理PNG透明问题
function correctPNG() 
{
   for(var i=0; i<document.images.length; i++)
   {
	  var img = document.images[i]
	  var LW=img.width
	  var LH=img.height
	  var imgName = img.src.toUpperCase()
	  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
	  { 
         img.style.filter+="progid:DXImageTransform.Microsoft.AlphaImageLoader(src="+img.src+", sizingmethod=scale);" 
         img.src="transparent.gif"
         img.width=LW
         img.height=LH
	  }
   }
}


var xmlHttp;
function executPost(data,page,yb,ybFun)
{
	if(yb==null)yb=false;
	xmlHttp=CreateXmlHttp("POST",page,yb);
	xmlHttp.setRequestHeader("Content-Length",data.length);  
	xmlHttp.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded");
	if(yb)
	{
		xmlHttp.onreadystatechange = eval(ybFun);
		xmlHttp.send(data);
		return;
	}else
		xmlHttp.send(data);
	return xmlHttp;
	}
	


var Msg=
{
	Info:'',
	isMsg:false,
	Func:null,
	Show:function(msg,n)
	{
		var z=createElement("div",{'id':'MsgBu','class':'MsgBu'});
		z.style.width=document.documentElement.clientWidth+'px';
		z.style.height=document.documentElement.scrollHeight+'px';
		document.body.appendChild(z);
		var b=createElement("div",{'id':'MsgWin','class':'MsgWin'},null,msg);
		b.style.left=Math.floor((document.documentElement.offsetWidth-250)/2)+'px';
		b.style.top=Math.floor(document.documentElement.clientHeight/2-60+document.documentElement.scrollTop)+'px';
		this.Func=null;
		document.body.appendChild(b);
		this.Info=msg;
		this.isMsg=true;
		if(n)setTimeout('Msg.Close();',1000*n);
	},
	reShow:function()
	{
		if(!Msg.isMsg)return;
		Msg.Close();
		Msg.Show(Msg.Info);
	},
	upShow:function(newInfo)
	{
		document.getElementById('MsgWin').innerHTML=newInfo;
	},
	timeClose:function(newInfo,n)
	{
		if(newInfo)document.getElementById('MsgWin').innerHTML=newInfo;
		if(!n)n=2;
		setTimeout('Msg.Close();',1000*n);
	},
	Close:function()
	{
		document.body.removeChild(document.getElementById('MsgBu'));
		document.body.removeChild(document.getElementById('MsgWin'));
		this.isMsg=false;
		this.Info='';
		eval(this.Func);
	}
}




var Opt=
{
	Info:'',
	isMsg:false,
	Show:function(msg,w,h)
	{
	    if(this.isMsg)return;
		var z=createElement("div",{'id':'OptWin','class':'MsgBu'});
		z.style.width=document.documentElement.clientWidth+'px';
		z.style.height=document.documentElement.scrollHeight+'px';
		document.body.appendChild(z);
		var b=createElement("div",{'id':'OptWin1','class':'OptWin'},null,msg);
		b.style.left=Math.floor((document.documentElement.clientWidth-w)/2)-15+'px';
		b.style.top=Math.floor(document.documentElement.clientHeight-h)/2.3+'px';
		b.style.width=w+'px';
		b.style.height=h+'px';
		document.body.appendChild(b);
		this.Info=msg;
		this.isMsg=true;
	},
	Close:function()
	{
		document.body.removeChild(document.getElementById('OptWin'));
		document.body.removeChild(document.getElementById('OptWin1'));
		this.isMsg=false;
		this.Info='';
	}
}


//居中的窗口
function Open(src,w,h){
    var t = (window.screen.availHeight-30-h)/2;      
    var l = (window.screen.availWidth-10-w)/2;         
    var win= window.open(src,'','location=no,height='+h+',width='+w+',top='+t+',left='+l+',model=yes,scrollbars=yes');
    return win;   
}





//给FIREFOX加window.event
function __firefox(){
    HTMLElement.prototype.__defineGetter__("runtimeStyle", __element_style);
    window.constructor.prototype.__defineGetter__("event", __window_event); 
    Event.prototype.__defineGetter__("srcElement", __event_srcElement); 
} 

function __element_style(){ 
    return(this.style); 
} 

function __window_event(){ 
    return(__window_event_constructor()); 
} 

function __event_srcElement(){ 
    return this.target; 
}

function __window_event_constructor(){ 
    if(document.all)
        return(window.event);
    var _caller=__window_event_constructor.caller; 
    while(_caller!=null){
        var _argument=_caller.arguments[0]; 
        if(_argument){ 
            var _temp=_argument.constructor;
            if(_temp.toString().indexOf("Event")!=-1)
                return(_argument); 
        }
        _caller=_caller.caller; 
    }
    return(null); 
} 

if(window.addEventListener){ 
    __firefox(); 
}