// JavaScript Document

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) {
	// remove any error messages
	var divs = document.getElementsByTagName("div");
	for (var i=0; i<divs.length; i++) {
		if (divs[i].getAttribute("className") == "errorMsg") {
			divs[i].parentNode.removeChild(divs[i]);
			i--;
		}
	}
	//test mode
	if (whichform.className.indexOf("test") != -1) {
		if (!confirm("You are in test mode. Do you want to continue?")) return false;
	}
	var validated = true;
	for (var i=0; i<whichform.elements.length; i++) {
		var element = whichform.elements[i];
		if (element.className.indexOf("required") != -1) { //if this field is mandatory
			if (element.name.toLowerCase().indexOf("email") != -1) {
				if (whichform.className.indexOf("test") != -1) element.value = "Test@Value.com";
				if (!isEmail(element)) {
					createErrorMsg("Please enter a valid email!", element);
					validated = false;
				}
			//call custom validation function and error messages
			/*} else if (condition) {
				if (!isFunction(element)) {
					createErrorMsg("", element);
					validated = false;
				}
			*/		
			} else {
				if (whichform.className.indexOf("test") != -1) element.value = "Test Value";
				if (!isFilled(element)) {
					createErrorMsg("Please complete!", element);
					validated = false;
				}
			}
		}
	}
	if (whichform.className.indexOf("test") != -1) {
		if (!confirm("Do you want to submit this form?")) return false;
	}
	return validated;
}


function createErrorMsg(msg, element) {
	var errorMsg = document.createElement("div");
	errorMsg.setAttribute("class","errorMsg");
	errorMsg.setAttribute("className","errorMsg");
	var emText = document.createTextNode(msg);
	errorMsg.appendChild(emText); 
	element.parentNode.insertBefore(errorMsg,element);	
}

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


function isEmail(field) {
	var emailString = field.value;
	var emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$";
	var regex = new RegExp(emailReg);
	return regex.test(emailString) 
}

function isKeyphrase(field) {
	var words = field.value.split(" ");
	if (words.length <= 1 || field.value == field.defaultValue) {
		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(prepareForms);