function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
 		window.onload = func;
	} else {
		window.onload = function() {
 		oldonload();
 		func();
		}
	}
}
function focusLabels() {
  if (!document.getElementsByTagName) return false;
  var labels = document.getElementsByTagName("label");
  for (var i=0; i<labels.length; i++) {
    if (!labels[i].getAttribute("for")) continue;
    labels[i].onclick = function() {
      var id = this.getAttribute("for");
      if (!document.getElementById(id)) return false;
      var element = document.getElementById(id);
      element.focus();
    }
  }
}

function resetFields(whichform) {
  for (var i=0; i<whichform.elements.length; i++) {
    var element = whichform.elements[i];
    if (element.type == "submit") continue;
    if (!element.defaultValue) continue;
    element.onfocus = function() {
    if (this.value == this.defaultValue) {
      this.value = "";
     }
    }
    element.onblur = function() {
      if (this.value == "") {
        this.value = this.defaultValue;
      }
    }
  }
}

function validateForm(whichform) {
  for (var i=0; i<whichform.elements.length; i++) {
    var element = whichform.elements[i];
    if (element.className.indexOf("required") != -1) {
      if (!isFilled(element)) {
        alert(element.title);
        return false;
      }
    }
    if (element.className.indexOf("email") != -1) {
      if (!isEmail(element)) {
        alert("Please enter a *valid* email address.");
        return false;
      }
    }
// This really should be a check for the length of all inputs of
// class=brochure being equal to more than 0. Make this script less specific in the future.
	var kft = document.getElementById('KFT_Brochure').value * 1;
	var swl = document.getElementById('SWL_Brochure').value * 1;
	var pws = document.getElementById('PWS_Brochure').value * 1;
	var tal = document.getElementById('TAL_Brochure').value * 1;
	var catc = document.getElementById('CATC_Sales_Brochure').value * 1;
	var catcmtg = document.getElementById('CATC_Meeting_Brochure').value * 1;
	var brochures = kft + swl + pws + tal + catc + catcmtg;
	if (brochures < 1) {
		alert("Please specify the quantity of brochures that you would like to receive.");
        return false;
	}
  }
  return true;
}

function isFilled(field) {
  if (field.value.length < 1 || field.value == field.defaultValue) {
    return false;
  } else {
    return true;
  }
}

function isEmail(field) {
  if (field.value.indexOf("@") == -1 || field.value.indexOf(".") == -1) {
    return false;
  } else {
    return true;
  }
}

function prepareForms() {
  for (var i=0; i<document.forms.length; i++) {
    var thisform = document.forms[i];
    resetFields(thisform);
    thisform.onsubmit = function() {
      return validateForm(this);
    }
  }
}

addLoadEvent(focusLabels);
addLoadEvent(prepareForms);