รับค่า array มาแก้ โดยส่วนที่แก้คำนวณราคาแบบอัตโนมัติ ปัญหาอยู่ที่ว่า มันออโต้แค่ช่องแรก จะเขียนยังไงให้มันอัตโนมัติทุกช่อง

while($row_edit_print = mysql_fetch_array($result_edit_print)){
	echo "<tr>";	
	echo "<td>
	<select name=\"type[]\" ID=\"type[]\">
	<option value=\"".$row_edit_print['orp_type']."\">".$row_edit_print['orp_type']."</option>
	<option value=\"\">----------</option>
	<option value=\"Medication and Supplement\">Medication and Supplement</option>
	<option value=\"Laboratory\">Laboratory</option>
	<option value=\"Personal expenses\">Personal expenses</option>
	</select>
	</td>";	
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_date_print']."\" name=\"dateprint[]\" ID=\"dateprint[]\" /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_description']."\" name=\"description[]\" ID=\"description[]\" size=\"40\" /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_qty']."\" name=\"qty[]\" size=\"10\" ID=\"qty[]\" /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_cost']."\" name=\"cost[]\" size=\"10\" ID=\"cost[]\" /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_addcost']."\" name=\"addcost[]\" ID=\"addcost[]\" size=\"10\" /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_discount']."\" name=\"discount[]\" ID=\"discount[]\" onkeyup=\"cal('this.value')\" size=\"10\"  /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_unit']."\" name=\"pricecharge[]\" ID=\"pricecharge[]\" onkeyup=\"cal('this.value')\"  size=\"10\"  /></td>";
	echo "<td><input type=\"text\" value=\"".$row_edit_print['orp_total']."\" name=\"total[]\" ID=\"total[]\" size=\"10\" /></td>";
	echo "<td><a href=\"dl-print-out.php?orpid=".$row_edit_print['orp_id']."&amp;orpgid=".$row_edit_print['orp_gid']."&amp;no=".$no."\" title=\"Delete\" onclick='return confirmLink(this,\"Are you sure you want to delete?\")'><img src=\"images/delete-1.png\" alt=\"Delete\" width=\"17\" height=\"17\" border=\"0\" /></a></td>";
	echo "</tr>";
	echo "<input type=\"hidden\" value=\"".$row_edit_print['orp_id']."\" name=\"id_rp[]\">";
	echo "<input type=\"hidden\" value=\"".$total."\" name=\"line\" id=\"line\">";

	} 
	echo "<tr align=\"center\">";
	echo "<td colspan=\"10\"><input name=\"btnSubmit\" type=\"submit\" id=\"btnSubmit\" value=\"Edit\" style=\"width:50px\" />&nbsp;&nbsp;&nbsp;";
	echo "<input type=\"button\" value=\"Close\" onClick=\"window.location='print-out.php'\" /></td>";
	echo "</tr>";

<script type="text/javascript"> 
<!--
	var currencyOnly = function(event) {
		var key = event.which || event.keyCode;
		if(!((key > 47 && key < 58) || key == 8 || key == 9 || key == 37 || key == 39 || key == 46)) {
			GEvent.stop(event);
			return false;
		}else {
			return true;
		}
	};

	var calc = function(event) {
		var qty1 = parseFloat($E('qty[]').value);
		qty1 = isNaN(qty1) ? 0 : qty1;
		var cost1 = parseFloat($E('cost[]').value);
		cost1 = isNaN(cost1) ? 0 : cost1;
		var addcost1 = parseFloat($E('addcost[]').value);
		addcost1 = isNaN(addcost1) ? 0 : addcost1;
		var discount1 = parseFloat($E('discount[]').value);
		discount1 = isNaN(discount1) ? 0 : discount1;
		var pricecharge1 = parseFloat($E('pricecharge[]').value);
		pricecharge1 = isNaN(pricecharge1) ? 0 : pricecharge1;
		$E('pricecharge[]').value = (cost1 * addcost1) - discount1;
		$E('total[]').value = qty1 * $E('pricecharge[]').value;
	};

	$G('qty[]').addEvent('keypress', currencyOnly);
	$G('cost[]').addEvent('keypress', currencyOnly);
	$G('addcost[]').addEvent('keypress', currencyOnly);
	$G('discount[]').addEvent('keypress', currencyOnly);
	$G('pricecharge[]').addEvent('keypress', currencyOnly);

	$G('qty[]').addEvent('keyup', calc);
	$G('cost[]').addEvent('keyup', calc);
	$G('addcost[]').addEvent('keyup', calc);
	$G('discount[]').addEvent('keyup', calc);
	$G('pricecharge[]').addEvent('keyup', calc);

	$G('qty[]').addEvent('change', calc);
	$G('cost[]').addEvent('change', calc);
	$G('addcost[]').addEvent('change', calc);
	$G('discount[]').addEvent('change', calc);
	$G('pricecharge[]').addEvent('change', calc);

	calc.call(this);
	//-->
</script>