// JavaScript Document
//更新驗證碼
function reloadimg()
{
	var re = document.getElementById('rimg').src;
	var nre = re + "?rnd" + Math.random();
	document.getElementById('rimg').src = nre;
}
//檢查表單
function checkform()
{
	document.getElementById('l1').style.visibility = "hidden";
	document.getElementById('l2').style.visibility = "hidden";
	document.getElementById('l3').style.visibility = "hidden";
	document.getElementById('l4').style.visibility = "hidden";
	document.getElementById('l5').style.visibility = "hidden";
	if (!chname(document.form1.name.value))
	{
		return false;
	}
	else if (!form1.sex[0].checked && !form1.sex[1].checked)
	{
		document.getElementById('l2').style.visibility = "visible";
		return false;
	}
	else if (!chanum(document.form1.num.value))
	{
        return false;
	}
	else if (!ismail(document.form1.mail.value))
	{
        return false;
	}
	else if (!chamsg(document.form1.comments.value))
	{
        return false;
	}	
}
//檢查 name 不為空白
function chname(s)
{
	  if (s.length <= 0)
	  {
		document.getElementById('l1').style.visibility = "visible";
		document.form1.name.focus();
		return false;
	  }
	  var ex = "^[0-9a-zA-Z\u4e00-\u9fa5]+$";
	  var re = new RegExp(ex);    
	  if(!re.test(s))
	  {
		document.getElementById('l1').style.visibility = "visible"; 
		document.form1.name.focus();
		return false;
	  }
	  else 
	    return true;
}
//電子信箱 是否正確
function ismail(s)
{ 
    if (s.length <= 0){
      document.getElementById('l3').style.visibility = "visible";
      document.form1.mail.focus() ;
      return false;
    }
	if(s.length > 0)
	{
		var regu = "^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|com|gov|mil|org|cc|edu|biz|int|tv)$"
var re = new RegExp(regu);
       if (s.search(re) != -1)
	   {
		   return true;
	   }
	   else{
	     document.getElementById('l3').style.visibility = "visible";
         document.form1.mail.focus() ;
	     return false;
	   }
	}
}
//電話不為空白
function chanum(s)
{
	 if (s.length <= 0)
	  {
		document.getElementById('l4').style.visibility = "visible";
		document.form1.num.focus();
		return false;
	  }
	  else 
	    return true;
}
//留言不為空白
function chamsg(s)
{
	 if (s.length <= 0)
	  {
		document.getElementById('l5').style.visibility = "visible";
		document.form1.comments.focus();
		return false;
	  }
	  else 
	    return true;
}
function dsra()
{
	if (document.form1.sex[0].checked)
	  document.form1.sen.value = "0";
	if (document.form1.sex[1].checked)
	  document.form1.sen.value = "1";
}