function validationn(uname)

{

	//alert('hi');

	 //var url = 'identifier-check.php?identifier='+identifier;

	 var url = 'functionajax.php?uname=' + uname + '&dummy=' + new Date().getTime();

	//alert(url);

     new Ajax.Request(url,{

     method: 'get',

     onLoading: function(transport)

     {

        // $(dv).show().update('Please wait....');

     },

     onSuccess: function(transport)

     {

         var dr = transport.responseText;

		//alert(dr);

		if(dr=="e")

		{

				document.getElementById('uname').value="";

				document.getElementById('show').innerHTML = "<img src='images/drop.png' border='0'>Please Enter New UserName";

				document.getElementById('uname').focus();

		}

		else

		{

				

				document.getElementById('show').innerHTML = "<img src='images/tick.jpg' border='0'> UserName Available";

				document.getElementById('nname').focus();

		}

		

		

	},

     onFailure: function(transport)

     {

         // when the request fails

         alert('The request failed..');

     },

     onException: function(err)

     {

         // When an exception is encountered while executing the callbacks

       //  alert('Exception');

     }

     });

}