<?php

echo "hello";

?>

<script type="text/javascript" src="jquery.js"></script>

<script type="text/javascript">
$(document).ready(function(){

    $("div.click_me").live('click',function(){


    $.ajax({

        type:"POST",
        data:null,
        url:"xyz.php",
        success:function(response){

        alert(response);

        }

    })


    });



});




</script>


<div class="click_me"> CLICK </div>

<script type="text/javascript">
$(document).ready(function(){

    $("div.click_me").live('click',function(){

        res=xxx();

        alert(res)

    });



});

function xxx(){


    $.ajax({

        type:"POST",
        data:null,
        url:"xyz.php",
        success:function(response){

            res=response;

        }

    })

    return res;

}


</script>

res = xxx();
alert(res);

$('div.click_me').live('click',function()
{
    function alertCallback(x)
    {
        alert(x);
    }

    xxx(alertCallback);
});

function xxx(callback)
{
    $.post('xyz.php', null, function (result)
    {
        callback(result);
    });
}

return res;

$.ajax({

    type:"POST",
    data:null,
    url:"xyz.php",
    success:function(response){

       callback(response);

    }

})

return res;

$("div.click_me").live('click',function(){

    res=xxx();

    alert(res)

});

$.ajax({

    type:"POST",
    data:null,
    url:"xyz.php",
    success:function(response){

        res=response;
        alert("abc");

    }

})
alert("xyz");
return res;