Javascript validation is not working inside usercontrol

  1  function ValidateCustomerName() {<br />
  2      debugger;<br />
  3      var AptName = document.forms["form1"]["count_txtAptName"];<br />
  4     // var AptName = document.forms["form1"]["txtAptName"];<br />
  5      var lblAptName = document.getElementById('<%=WebForm1.FindControl("Label1").ClientID %>')//document.getElementById('<%=Label1.ClientID%>');//document.getElementById("count_Label1");//<br />
  6      if (AptName.value.length == 0) {<br />
  7          AptName.focus();<br />
  8          lblAptName.innerHTML = "Please fill Applicant Name2";<br />
  9          return false;<br />
 10      }<br />
 11      else if (!AptName.value.match(/^[A-Za-z ]+$/)) {<br />
 12          AptName.focus();<br />
 13          lblAptName.innerHTML = "Applicant Name contain only alphabet2";<br />
 14          return false;<br />
 15      }<br />
 16      else {<br />
 17          lblAptName.innerHTML = "";<br />
 18      }<br />
 19  }<br />