how to link username to like and dislike button

<script type="text/javascript">​function checkItem()​{​for(count=0;count<2;count++)​{​if (MyForm.item[count].checked)​alert(MyForm.item[count].value+" is selected");​}​}​</script>​<a style="text-align: center;" href="user.php";onclick=checkItem() > </strong>Like</a><span style="text-align: center;"> </span><a style="text-align: center;" href="user.php"; onclick=checkItem()><strong>Dislike</a>​
how it will link on database i want jst like fb buttons(when we click on fb like button it will show us you like this.... i want the same) you like this you dislike this...??​Hw to do this... can anyone tell me ??​