// JavaScript Document
 window.onload=function(){
var _1=document.getElementById("h_qiehuan").getElementsByTagName("li");
for(var i=0;i<_1.length;i++){
_1[i].onmouseover=function(){
this.className+=(this.className.length>0?" ":"")+"cityhover";
};
_1[i].onmouseout=function(){
this.className=this.className.replace(new RegExp("( ?|^)cityhover\\b"),"");
};
}
}; 
function secBoard(n)
{
    for(i=1;i<secTable.cells.length-1;i++)
	
      secTable.cells[i].className="sec1";
    secTable.cells[n+1].className="sec2";
    for(i=0;i<mainTable.tBodies.length;i++)
      mainTable.tBodies[i].style.display="none";
    mainTable.tBodies[n-1].style.display="block";
	secTable.cells[1].className="";
  }
function checkmessage()
{
if (document.form.messagetext.value.length<1)
{
alert("请填写留言内容！");
document.form.messagetext.focus();
return false;
}
if (document.form.messagetext.value.length>100)
{
alert("请把留言字数控制在100以内！");
document.form.messagetext.focus();
return false;
}
}