[abduraooft]

When you have the current object referrer this in your code,

onclick=go_java(this)

you may change your javascript to

function go_java(elm)
{
alert(elm.id);
}

BUT, you can't have the same value of id applied to multiple elements, which makes the document invalid. So, you may need to append the auto-increment id to the value, like

PHP Code:

echo '<tr><td><input type="checkbox" name="box" id="index'.$row['sid'].'" value="'.$id.'" onclick="go_java(this)">';