/* 
 * Cross-browser event handling, by Scott Andrew
 */
function addEvent(element, eventType, lamdaFunction, useCapture) {
    if (element.addEventListener) {
        element.addEventListener(eventType, lamdaFunction, useCapture);
        return true;
    } else if (element.attachEvent) {
        var r = element.attachEvent('on' + eventType, lamdaFunction);
        return r;
    } else {
        return false;
    }
}

/* 
 * Kills an event's propagation and default action
 */
function knackerEvent(eventObject) {
    if (eventObject && eventObject.stopPropagation) {
        eventObject.stopPropagation();
    }
    if (window.event && window.event.cancelBubble ) {
        window.event.cancelBubble = true;
    }
    
    if (eventObject && eventObject.preventDefault) {
        eventObject.preventDefault();
    }
    if (window.event) {
        window.event.returnValue = false;
    }
}

/* 
 * Safari doesn't support canceling events in the standard way, so we must
 * hard-code a return of false for it to work.
 */
function cancelEventSafari() {
    return false;        
}

/* 
 * Cross-browser style extraction, from the JavaScript & DHTML Cookbook
 * <http://www.oreillynet.com/pub/a/javascript/excerpt/JSDHTMLCkbk_chap5/index5.html>
 */
function getElementStyle(elementID, CssStyleProperty) {
    var element = document.getElementById(elementID);
    if (element.currentStyle) {
        return element.currentStyle[toCamelCase(CssStyleProperty)];
    } else if (window.getComputedStyle) {
        var compStyle = window.getComputedStyle(element, '');
        return compStyle.getPropertyValue(CssStyleProperty);
    } else {
        return '';
    }
}

/* 
 * CamelCases CSS property names. Useful in conjunction with 'getElementStyle()'
 * From <http://dhtmlkitchen.com/learn/js/setstyle/index4.jsp>
 */
function toCamelCase(CssProperty) {
    var stringArray = CssProperty.toLowerCase().split('-');
    if (stringArray.length == 1) {
        return stringArray[0];
    }
    var ret = (CssProperty.indexOf("-") == 0)
              ? stringArray[0].charAt(0).toUpperCase() + stringArray[0].substring(1)
              : stringArray[0];
    for (var i = 1; i < stringArray.length; i++) {
        var s = stringArray[i];
        ret += s.charAt(0).toUpperCase() + s.substring(1);
    }
    return ret;
}

/*
 * Disables all 'test' links, that point to the href '#', by Ross Shannon
 */
function disableTestLinks() {
  var pageLinks = document.getElementsByTagName('a');
  for (var i=0; i<pageLinks.length; i++) {
    if (pageLinks[i].href.match(/[^#]#$/)) {
      addEvent(pageLinks[i], 'click', knackerEvent, false);
    }
  }
}

/* 
 * Cookie functions
 */
function createCookie(name, value, days) {
    var expires = '';
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days*24*60*60*1000));
        var expires = '; expires=' + date.toGMTString();
    }
    document.cookie = name + '=' + value + expires + '; path=/';
}

function readCookie(name) {
    var cookieCrumbs = document.cookie.split(';');
    var nameToFind = name + '=';
    for (var i = 0; i < cookieCrumbs.length; i++) {
        var crumb = cookieCrumbs[i];
        while (crumb.charAt(0) == ' ') {
            crumb = crumb.substring(1, crumb.length); /* delete spaces */
        }
        if (crumb.indexOf(nameToFind) == 0) {
            return crumb.substring(nameToFind.length, crumb.length);
        }
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, '', -1);
}








/*
 * Clear Default Text: functions for clearing and replacing default text in
 * <input> elements.
 *
 * by Ross Shannon, http://www.yourhtmlsource.com/
 */

addEvent(window, 'load', init, false);

function init() {
    var formInputs = document.getElementsByTagName('input');
    for (var i = 0; i < formInputs.length; i++) {
        var theInput = formInputs[i];
        
        if (theInput.type == 'text' && theInput.className.match(/\bcleardefault\b/)) {  
            /* Add event handlers */          
            addEvent(theInput, 'focus', clearDefaultText, false);
            addEvent(theInput, 'blur', replaceDefaultText, false);
            
            /* Save the current value */
            if (theInput.value != '') {
                theInput.defaultText = theInput.value;
            }
        }
    }
}

function clearDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == target.defaultText) {
        target.value = '';
    }
}

function replaceDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == '' && target.defaultText) {
        target.value = target.defaultText;
    }
}


/*======================================================
========================================================
========================================================*/


function styleInput(inputId, hasError){
	
	var curInput = document.getElementById(inputId);
	
	if(hasError){
		curInput.style.border = 'solid 1px #FF0000';
		curInput.style.background = '#fff';
		curInput.style.color = '#D20000';	
	}
	else{
		curInput.style.border = 'solid 1px #ccc';
		curInput.style.background = '#fff';
		curInput.style.color = '#797979';	
	}
}

function setToolTip(inputId, errorMessage){
	var curToolTip;
	var curId = inputId + "_tooltip";
	if(document.getElementById(curId) == null){
		var curToolTipDiv = document.createElement("div");
		curToolTipDiv.innerHTML = errorMessage;
		curToolTipDiv.setAttribute("id", curId);
		document.getElementById('tool_tips').appendChild(curToolTipDiv);
		curToolTip = new Tooltip(inputId, curId);	
	}
	else if(document.getElementById(curId)){
		document.getElementById(curId).innerHTML = errorMessage;
	}
}

function removeToolTip(inputId){
	var curToolTipDiv = document.getElementById(inputId + '_tooltip');
	if(curToolTipDiv){
		document.getElementById('tool_tips').removeChild(curToolTipDiv);
	}
}

function validate(thisform){

	var inputs = thisform.getElementsByTagName('input');
	var emailRegex = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	var noErrors = true;
	
	for(i=0; i < inputs.length; i++){	
		if(inputs[i].value == ''){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Cannot be blank');
		}
		else if(inputs[i].value == 'Your Name'){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Cannot be default');
		}
		else if(inputs[i].id == 'email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		}
		else if(inputs[i].id == 'signup_email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		}
		else if(inputs[i].id == 'conbus_email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		}
		else if(inputs[i].id == 'inv_email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		}
		else if(inputs[i].id == 'br_email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		}
		else if(inputs[i].id == 'as_email' && !emailRegex.test(inputs[i].value)){
			noErrors = false;
			styleInput(inputs[i].id, true);
			setToolTip(inputs[i].id, 'Invalid email address.');
		} 
		else {
			styleInput(inputs[i].id, false);
			removeToolTip(inputs[i].id);
		}	
	}
	return noErrors;
}