function changeContent(field,title){
	var txt = document.getElementById(field).value;
	refLink = './forms/address_frame.php?ad_id=' + txt + '&title=' + title;
	document.getElementById("addresses-frame").src=refLink;
}

function changeContactContent(co_id,ad_id){
	refLink = './forms/contact_address_frame.php?co_id=' + co_id + '&ad_id=' + ad_id;
	document.getElementById("contact-address-frame").src=refLink;
}

function disableContactAddressFields(){
	document.contact.ad_address1.disabled=true;
	document.contact.ad_address2.disabled=true;
	document.contact.ad_city.disabled=true;
	document.contact.ad_county.disabled=true;
	document.contact.ad_postcode.disabled=true;
	document.contact.ad_country.disabled=true;
}

function setItemFields() {
	var itemText = document.getElementById('dd_it_id_sel').options[document.getElementById('dd_it_id_sel').selectedIndex].value;
	var itemParts = itemText.split("~");
	document.getElementById('dd_it_id').value = itemParts[0];
	document.getElementById('dd_desc').value = itemParts[1];
	document.getElementById('dd_uom').value = itemParts[2];
	document.getElementById('dd_gross').value = itemParts[3];
	document.getElementById('dd_net').value = itemParts[4];
	document.getElementById('dd_tare').value = itemParts[5];
}

function calcWeights() {
	var itemQty = document.getElementById('dd_qty').value;
	var itemText = document.getElementById('dd_it_id_sel').options[document.getElementById('dd_it_id_sel').selectedIndex].value;
	var itemParts = itemText.split("~");
	document.getElementById('dd_gross').value = itemParts[3] * itemQty;
	document.getElementById('dd_net').value = itemParts[4] * itemQty;
	document.getElementById('dd_tare').value = itemParts[5] * itemQty;
}

function clearWeights() {
	document.getElementById('dd_gross').value = '';
	document.getElementById('dd_net').value = '';
	document.getElementById('dd_tare').value = '';
}

function addList(srcField,destList){
	var txt = document.getElementById(srcField).value;
	var destField = document.getElementById(destList);
	destField[0] = Option(txt, txt);
	destField.selectedIndex = 0;
}

function wOpen(url, name, w, h) {
  w += 32;
  h += 96;
  wleft = (screen.width - w) / 2;
  wtop = (screen.height - h) / 2;
  var win = window.open(url,
    name,
    'width=' + w + ', height=' + h + ', ' +
    'left=' + wleft + ', top=' + wtop + ', ' +
    'location=no, menubar=no, directories=no, copyhistory=no, ' +
    'status=no, toolbar=no, scrollbars=no, resizable=no');
  win.resizeTo(w, h);
  win.moveTo(wleft, wtop);
  win.focus();
}