Deleting Selected Records For PHP Program?

I want javascript function to delete the selected records for the given php program below. Also I am not getting field values in correct order one field is more than its field.

Code:
<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="test"; // Database name
$tbl_name="emp"; // Table name

// Connect to server and select databse.
mysql_connect($host, $username, $password)or die("cannot connect");
mysql_select_db($db_name)or die("cannot select DB");
$sql="SELECT * FROM emp";
$result=mysql_query($sql);
$count=mysql_num_rows($result); .....