// JavaScript Document

function calculate_items(frm){
	
	document.getElementById("total_units").value = 0;
	if(document.getElementById("totalCA"))
		document.getElementById("totalCA").value = 0;
	if(document.getElementById("totalUS"))
		document.getElementById("totalUS").value = 0;
	
	var qtys = frm.getElementsByTagName("input");
	var total_units = 0;
	var total = 0;
	for(var i = 0; i<qtys.length; i++){
		if(qtys[i].id != "calculate" && qtys[i].id != "total_units" &&
	       qtys[i].id != "total" && qtys[i].id != "itemID" && parseInt(qtys[i].value) > 0)
			total_units += parseInt(qtys[i].value);
	}
	
	document.getElementById("total_units").value = total_units;
	
	if(document.getElementById("totalCA"))		
		document.getElementById("totalCA").value = parseFloat(total_units * priceCA);

	if(document.getElementById("totalUS"))		
		document.getElementById("totalUS").value = parseFloat(total_units * priceUS);
	
}