function openMsg(state,text) //遮照打开关闭控制
{
     if(state == 1)
     {
           
          showBg();
          
          //显示内容
          SetdvMassageBox(text);
     }
     else
     {
        document.all("bg").style.display = "none";
     } 
}
function SetdvMassageBox(text)
{
    dvMassageBox.style.top=document.documentElement.scrollTop+screen.height/3-30;
    dvMassageBox.style.visibility="visible";
    dvMassageBoxShow.innerHTML=text;
}
 function showBg(s)
{
    if(s==0)
        document.all("bg").style.display = "none";
    else
    {
    document.all("bg").style.display = "block";
          var h = document.body.scrollHeight;
          var w = document.body.offsetWidth>document.documentElement.offsetWidth?document.body.offsetWidth-20:document.documentElement.offsetWidth-20;
          document.all("bg").style.height = h + "px";
          document.all("bg").style.width = w + "px";
    }
}
function checkSearch(ob,s)
{
    var fromProvince=ob.fromprook.value;
    var fromCity=ob.fromcityok.value;
    var formArea=ob.fromcountyok.value;
    var toProvince=ob.toprook.value;
    var toCity=ob.tocityok.value;
    var toArea=ob.tocountyok.value;
    
    if(fromProvince=="")
    {
        openMsg(1,"您必须选择出发地的所在省份。");
        return false;
    }else if(fromCity=="")
    {
        openMsg(1,"您必须选择出发地的所在城市。");
        return false;
    }else if(formArea=="")
    {
        formArea="市辖区";
    }
    
    if(toProvince=="")
    {
        openMsg(1,"您必须选择到达地的所在省份。");
        return false;
    }else if(toCity=="")
    {
        openMsg(1,"您必须选择到达地的所在城市。");
        return false;
    }else if(toArea=="")
    {
        toArea="市辖区";
    }
	
    if(s!=0&&fromProvince+fromCity+formArea==toProvince+toCity+toArea)
    {
	
        openMsg(1,"出发城市和到达城市不能相同。");
        return false;
    }
	
    return true;
    
}
window.attachEvent("onload",loaded)
function loaded()
{
    if(typeof(document.all.bg)!="undefined")
    {
        document.all.bg.attachEvent("onclick",function(){document.all.bg.style.display='none';document.all.dvMassageBox.style.visibility='hidden'});
       
    }
}