<?PHP
session_start();
include "connect.php";
mysql_query("SET NAMES 'utf-8' ");
$m_id=$_REQUEST['id'];
$sql=" SELECT * FROM material , material_type , supplier WHERE material.mt_id = material_type.mt_id AND material.sup_id = supplier.sup_id AND m_id='$m_id' ";
$que=mysql_query($sql);
$array=mysql_fetch_array($que);
?>
<script language="JavaScript">
function chk(){
var a1=document.getElementById("m_cost").value;
var a2 = (a1*1.3);
document.getElementById('m_price').value = a2;
}
</script>