function nTabs(thisObj,Num){
if(thisObj.className == "active")return;
var tabObj = thisObj.parentNode.id;
var tabList = document.getElementById(tabObj).getElementsByTagName("li");
for(i=0; i <tabList.length; i++)
{
  if (i == Num)
  {
   thisObj.className = "active";
   document.getElementById(tabObj+"_Content"+i).style.display = "block";
  }
  else
  {
   tabList[i].className = "normal";
   document.getElementById(tabObj+"_Content"+i).style.display = "none";
  }
}
}
	
	
function ChangeDiv(divId,divName,zDivCount)
{
 for(i=0;i<=zDivCount;i++)
 {
     document.getElementById(divName+i).style.display="none";
 }
 document.getElementById(divName+divId).style.display="block";
}

//表单验证
function getFocus(obj)
{	
	if(obj.value==obj.defaultValue){obj.value='';}
}

function lostFocus(obj)
{	
	if(obj.value==''){obj.value=obj.defaultValue;}
}

function chkSubmit(obj)
{
	if(obj.from.value.length<2||obj.from.value==obj.from.defaultValue)
	{
		alert("请输入起始地!");
		obj.from.focus();
		return false;
	}
	if(obj.to.value.length<2||obj.to.value==obj.to.defaultValue)
	{
		alert("请输入目的地!");
		obj.to.focus();
		return false;
	}	
	return true;
}

//改变字体大小
function doZoom(size) 
{ 
var zoom=document.all?document.all['Zoom']:document.getElementById('Zoom'); 
zoom.style.fontSize=size+'px'; 
}     



//禁止右键
//document.oncontextmenu = function() { return false;}