function openWindow(url, title) {
	window.open(url, title, "toolbar=no,status=yes,scrollbars=no,resizable=no,width=490,height=320");
}

function resizeWindow() {
	IE7 = ((document.all) && (navigator.appVersion.indexOf("MSIE 7.") != -1)) ? true : false;
	if (IE7) {
		this.window.resizeTo(document.images['img'].width + 40, document.images['img'].height + 115);
	}
	else {
		this.window.resizeTo(document.images['img'].width + 40, document.images['img'].height + 90);
	}
}

function openAvailabilityWindow(url, wareID, size, amount, title) {
	window.open(url + '?w=' + wareID + '&s=' + size + '&a=' + amount, title, "toolbar=no,status=yes,scrollbars=no,resizable=no,width=490,height=320");
}

function initOverLabels () {
  if (!document.getElementById) return;  	

  var labels, id, field;

  // Set focus and blur handlers to hide and show 
  // LABELs with 'overlabel' class names.
  labels = document.getElementsByTagName('label');
  for (var i = 0; i < labels.length; i++) {
	
    if (labels[i].className == 'overlabel') {

      // Skip labels that do not have a named association
      // with another field.
      id = labels[i].htmlFor || labels[i].getAttribute('for');
      if (!id || !(field = document.getElementById(id))) {
        continue;
      }

      // Change the applied class to hover the label 
      // over the form field.
      labels[i].className = 'overlabel-apply';

      // Hide any fields having an initial value.
      if (field.value !== '') {
        hideLabel(field.getAttribute('id'), true);
      }

      // Set handlers to show and hide labels.
      field.onfocus = function () {
        hideLabel(this.getAttribute('id'), true);
      };
      field.onblur = function () {
        if (this.value === '') {
          hideLabel(this.getAttribute('id'), false);
        }
      };

      // Handle clicks to LABEL elements (for Safari).
      labels[i].onclick = function () {
        var id, field;
        id = this.getAttribute('for');
        if (id && (field = document.getElementById(id))) {
          field.focus();
        }
      };

    }
  }
};

function hideLabel (field_id, hide) {
  var field_for;
  var labels = document.getElementsByTagName('label');
  for (var i = 0; i < labels.length; i++) {
    field_for = labels[i].htmlFor || labels[i].getAttribute('for');
    if (field_for == field_id) {
      labels[i].style.textIndent = (hide) ? '-1000px' : '0px';
      return true;
    }
  }
}

window.onload = function () {
  setTimeout(initOverLabels, 50);
};