The following works correctly the first time. But if clicked again before a page refresh or page reload, it runs 2 or sometimes more times. Even after adding the $(this).unbind(); line.

$(document).ready(function() {
$("a#searchowner").click(function() {
var searchval=$("#p1").val(); 
  alert(searchval);
  $.post("findowner.php", {p1 : searchval}, function(data){
   if (data.length>0){ 
     //$("#ownerIDdiv2").fadeIn(1000).html(data);
	 $("#ownerIDdiv2").html(data); 
   } 
  }) 
   
$(this).unbind(); 
});
});   ///////////////end//////////////////////////