function check()
{
if(document.aspnetForm.ctl00$ContentPlaceHolder1$T1.value=="") {
    alert("Please input Firm Name！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T1.focus();
	return false;}
	
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T4.value=="") {
    alert("Please input Tel No.！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T4.focus();
	return false;}

	
    if(document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.length!=0)
      {
        if (document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.charAt(0)=="." ||        
             document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.charAt(0)=="@"||       
             document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.indexOf('@', 0) == -1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.indexOf('.', 0) == -1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.lastIndexOf("@")==document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.length-1 || 
             document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.lastIndexOf(".")==document.aspnetForm.ctl00$ContentPlaceHolder1$T17.value.length-1)
         {
          alert("Invalid email address！");
          document.aspnetForm.ctl00$ContentPlaceHolder1$T17.focus();
          return false;
          }
          }
     else
      {
       alert("Please input email！");
       document.aspnetForm.ctl00$ContentPlaceHolder1$T17.focus();
       return false;
       }	

	
	if(document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value=="") {
    alert("Please input Contact Person ！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T7.focus();
	return false;}
	
    if((!(document.getElementById("ctl00_ContentPlaceHolder1_R1_0").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_1").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_2").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_3").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_4").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_5").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R1_6").checked)))
    {
      alert("How Do You Know about Our Company!");
      return false;
    }
    
    if ((!(document.aspnetForm.ctl00$ContentPlaceHolder1$C1$0.checked))&&(!(document.aspnetForm.ctl00$ContentPlaceHolder1$C1$1.checked))&&(!(document.aspnetForm.ctl00$ContentPlaceHolder1$C1$2.checked))&&(!(document.aspnetForm.ctl00$ContentPlaceHolder1$C1$3.checked)))
    {
      alert("The IP Service You Would Like to Choose is (are)！");
      return false;}
}