function check()
{
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T1.value=="") {
    alert("Please input Name of Law Firm！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T1.focus();
	return false;}
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T4.value=="") {
    alert("Please input Contact Person ！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T4.focus();
	return false;}
	
    if(document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.length!=0)
      {
        if (document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.charAt(0)=="." ||        
             document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.charAt(0)=="@"||       
             document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.indexOf('@', 0) == -1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.indexOf('.', 0) == -1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.lastIndexOf("@")==document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.length-1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.lastIndexOf(".")==document.aspnetForm.ctl00$ContentPlaceHolder1$T5.value.length-1)
         {
          alert("Invalid email address！");
          document.aspnetForm.ctl00$ContentPlaceHolder1$T5.focus();
          return false;
          }
          }
     else
      {
       alert("Please input email！");
       document.aspnetForm.ctl00$ContentPlaceHolder1$T5.focus();
       return false;
      }
       
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T6.value=="") {
    alert("Please input Tel NO.！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T6.focus();
	return false;}
}
function tx1()
{
if (document.aspnetForm.ctl00$ContentPlaceHolder1$C6.checked)
	{document.getElementById("txt1").style.display = "";}
else
	{document.getElementById("txt1").style.display = "none";}
return false;
}
function tx2()
{
if (document.aspnetForm.ctl00$ContentPlaceHolder1$C13.checked)
	{document.getElementById("txt2").style.display = "";}
else
	{document.getElementById("txt2").style.display = "none";}
return false;
}