function validate()
{
  var VCode= new Array("G007GOVTA","E017STGEO","E013NSSHI","G010MAHAR","E011KURIA","E013NSSHI","G020STALB","G010MAHAR","C007STTHO","G025UCCOL","E019STSTE","G047MESCO","G005COCHI","G021STPAU","G009MESCO","E021STXAV","G024STXAV","P024MARAU","G056KMMCO","P028SETHR","P004CHINM","P021MESCO","F014JPMCO","E014SBCOL","G050SREEN");
  if (document.getElementById("txtCode").value=="" || document.getElementById("txtCode").value.length!=9)
    alert("Enter a valid code");
  else 
  {
   for(var i=0;i<VCode.length;i++)
    {
     if(document.getElementById("txtCode").value==VCode[i])
        break;
    }
    if(i==VCode.length)
      alert("Your Validation Key is Incorrect....");
    else  
	{
      pth="cht/"+document.getElementById("txtCode").value.toLowerCase()+".pdf";
      window.location=pth; 
	}
  }
    
}