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$ContentPlaceHolder1$T5.value=="") {
    alert("Please input Tel No.！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T5.focus();
	return false;}
	

if(document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.length!=0)
  {
    if (document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.charAt(0)=="." ||        
         document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.charAt(0)=="@"||       
         document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.indexOf('@', 0) == -1 || 
         document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.indexOf('.', 0) == -1 || 
         document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.lastIndexOf("@")==document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.length-1 || 
         document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.lastIndexOf(".")==document.aspnetForm.ctl00$ContentPlaceHolder1$T7.value.length-1)
     {
      alert("Invalid email address！");
      document.aspnetForm.ctl00$ContentPlaceHolder1$T7.focus();
      return false;
      }
      }
 else
  {
   alert("Please input email！");
   document.aspnetForm.ctl00$ContentPlaceHolder1$T7.focus();
   return false;
   }
	
   if(document.aspnetForm.ctl00$ContentPlaceHolder1$T9.value=="") {
    alert("Please input Contact Person ！");
    document.aspnetForm.ctl00$ContentPlaceHolder1$T9.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.getElementById("ctl00_ContentPlaceHolder1_R2").checked))&&(!(document.getElementById("ctl00_ContentPlaceHolder1_R3").checked)))
{
    alert("Please choose Purchase e-AF Retriever System!");
    return false;
}

}

function tabone()
{
    if (!(document.aspnetForm.ctl00$ContentPlaceHolder1$R2.checked))
        {
	        (!(tabo.style.display = "none"))&&(!(txt2.style.display = ""))
	        return false;
        }
        else
        {
	        (!(tabo.style.display = ""))&&(!(txt2.style.display = "none"))
	        document.aspnetForm.ctl00$ContentPlaceHolder1$R3.checked=false;
	        return false;
        }
}
function tabone1()
{
    if (!(document.aspnetForm.ctl00$ContentPlaceHolder1$R3.checked))
    {
	    (!(txt2.style.display = "none"))&&(!(tabo.style.display = ""))
	    return false;
    }
    else
    {
    (!(txt2.style.display = ""))&&(!(tabo.style.display = "none"))
    document.aspnetForm.ctl00$ContentPlaceHolder1$R2.checked=false;
    return false;
    }
}
function openwindow()
{
    window.open("http://www.de100.com/f/form1.asp" , '', 'height=500, width=400, top=0,left=0, toolbar=yes, menubar=yes, scrollbars=yes,resizable=yes,location=yes,status=yes');
    window.alert("Please fill in the sheet of court form details");
    return;
}