function CheckLogin()
{
    if(document.getElementById('txtName').value=="")
    {
        alert("请输入用户名!");
        document.getElementById('txtName').focus();
    }
    else if(document.getElementById('txtPwd').value=="")
    {
        alert("请输入密码!");
        document.getElementById('txtPwd').focus();
    }
    else
    {
        window.open("http://www.nbjdstats.gov.cn:8080/userlogin.asp?login=1&username="+document.getElementById('txtName').value+"&password="+document.getElementById('txtPwd').value,"login");
        //window.open("http://www.sina.com.cn");
        document.getElementById('txtName').value="";
        document.getElementById('txtPwd').value="";
    }
}

function CheckSearch()
{
    if(document.getElementById('txtSearch').value=="请输入搜索关键字")
    {
        alert("请输入搜索关键字!");
    }
    else
    {
       window.open("Search.aspx?key="+document.getElementById('txtSearch').value); 
    }
}

function Check()
{
	var   notnull=true;   
		  if  (form1.txtName.value=="")   
		  {   
		  		form1.txtName.focus();   
		  		alert("发信人不能为空!");   
		  		notnull=false;   
		  }
		  else if (form1.txtAddr.value=="")   
		  {   
		  		form1.txtAddr.focus();   
		  		alert("联系地址不能为空!");   
		  		notnull=false;   
		  } 
		  else if (form1.txtPhone.value=="")   
		  {   
		  		form1.txtPhone.focus();   
		  		alert("联系电话不能为空!");   
		  		notnull=false;   
		  } 
  		  else if (form1.txtTitle.value=="")   
		  {   
		  		form1.txtTitle.focus();   
		  		alert("信件标语不能为空!");   
		  		notnull=false;   
		  } 
		  else if (form1.txtContent.value=="")   
		  {   
		  		form1.txtContent.focus();   
		  		alert("信件内容不能为空!");   
		  		notnull=false;   
		  } 
	return notnull;
}

function Clear()
{
    form1.txtName.value="";
    form1.txtEmail.value="";
    form1.txtPhone.value="";
    form1.txtTitle.value="";
    form1.txtContent.value="";
    form1.txtAddr.value="";
    form1.txtName.focus();
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  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 MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function ImgChangue(n)
{
    for(var i=1;i<=5;i++)
    {
        if(i==n)
        {
            document.getElementById("imgi"+i).src="images/index_155.gif";
            document.getElementById("imgi"+i+"_1").src="images/index_159.gif";
            document.getElementById("td"+i).style.background="url(images/index_157.gif)";
            document.getElementById("td"+i).style.fontSize="14px";
            document.getElementById("td"+i).style.fontWeight="bold";
            document.getElementById("td"+i).style.color="#24639A";
        }
        else
        {
            document.getElementById("imgi"+i).src="images/index_162.gif";
            document.getElementById("imgi"+i+"_1").src="images/index_165.gif";
            document.getElementById("td"+i).style.background="url(images/index_164.gif)";
            document.getElementById("td"+i).style.fontSize="12px";
            document.getElementById("td"+i).style.fontWeight="";
            document.getElementById("td"+i).style.color="#333333";
        }
    }
}


function show_page(ctr_name,num,title_ctr){
  var div_ctr=document.all.item(ctr_name);
  if (div_ctr!=null){
    for (var n=0;n<div_ctr.length;n++){
		if(n==num-1){
			div_ctr[n].style.display="";
		}
		else{
			div_ctr[n].style.display="none";
		}
	}
  }
  else{
	  alert('参数有误');
  }
}

function ChangeImg(ImgD,FitWidth,FitHeight)
{    
    var image=new Image();    
    image.src=ImgD.src; 
  
    if(image.width>FitWidth)
    {        
        ImgD.width=FitWidth;      
        ImgD.height=(image.height*FitWidth)/image.width;      
    }
    else if(image.height>FitHeight)
    {        
        ImgD.height=FitHeight;      
        ImgD.width=(image.width*FitHeight)/image.height;          
    }
    else
    {      
        ImgD.width=image.width;        
        ImgD.height=image.height;      
    }  
 } 
 
function CheckBoxList_Click(sender,num) 
{
    var container = sender.parentNode;        
    if(container.tagName.toUpperCase() == "TD") 
    { // 服务器控件设置呈现为 table 布局（默认设置），否则使用流布局
        container = container.parentNode.parentNode; // 层次： <table><tr><td><input />
    }        
    var chkList = container.getElementsByTagName("input");
    var senderState = sender.checked;
    var checkNum=0;
    if(num>0)
    {
        if(num==1)
        {
            for(var i=0; i<chkList.length;i++) 
            {
                chkList[i].checked = false;
            }     
            sender.checked = senderState; 
        }
        else
        {
            for(var i=0; i<chkList.length;i++) 
            {
                if(chkList[i].checked)
                {
                    checkNum++;
                }
            }
            if(checkNum>num)
            {
                sender.checked=false;
                alert("最多只能选"+num+"项,如果你想继续选择,请先去掉一些已选的项目!")
            }
            else
            {
                sender.checked = senderState;
            }
        }
    }          
}

function ChangeCheckBoxType()
{
    var tbls=document.getElementsByTagName("TABLE");
    for(var i=0;i<tbls.length;i++)
    {
        if(tbls[i].TblName=="tblRadio")
        {
            var chkList = tbls[i].getElementsByTagName("input");
            for(var j=0;j<chkList.length;j++)
            {
                chkList[j].outerHTML=chkList[j].outerHTML.replace("checkbox","radio");
            }
        }
    }
}