$(document).ready(function(){
	  var input;
    var inputs = document.getElementsByTagName('input');
    for (var i = 0; (input = inputs[i]); i++) {
        $(inputs).bind('focus', oninputfocus);
        $(inputs).bind('blur', oninputblur);
    }
    var textareas = document.getElementsByTagName('textarea');
    for (var i = 0; (textarea = textareas[i]); i++) {
        $(textarea).bind('focus', oninputfocus);
        $(textarea).bind('blur', oninputblur);
    }
});

function checkSubmission (thisForm) {
	if ( thisForm.message.value == '' ) {
    	alert('Oops! You didn\'t type a message!');
    	return false;     
    }
    return true;
}

function getLabelForId(id) {
    var label, labels = document.getElementsByTagName('label');
    for (var i = 0; (label = labels[i]); i++) {
        if (label.htmlFor == id) {
            return label;
        }
    }
    return false;
}
function checkEmail() {
    var email = document.getElementById('email');
    var label = getLabelForId('email');
    if (email.value.indexOf('@') == -1 || email.value.indexOf('.') == -1 || email == '') { // Naive check for non empty string with @ sign
        label.className = 'invalidentry';
    } else {
        label.className = 'validentry';
    }
}
function checkRequired(id) {
    var formfield = document.getElementById(id);
    var label = getLabelForId(id);
    if (formfield.value.length == 0) {
        label.className = 'invalidentry';
    } else {
        label.className = 'validentry';
    }
}
function oninputfocus(e) {
    /* Cookie-cutter code to find the source of the event */
    if (typeof e == 'undefined') {
        var e = window.event;
    }
    var source;
    if (typeof e.target != 'undefined') {
        source = e.target;
    } else if (typeof e.srcElement != 'undefined') {
        source = e.srcElement;
    } else {
        return;
    }
}
function oninputblur(e) {
    /* Cookie-cutter code to find the source of the event */
    if (typeof e == 'undefined') {
        var e = window.event;
    }
    var source;
    if (typeof e.target != 'undefined') {
        source = e.target;
    } else if (typeof e.srcElement != 'undefined') {
        source = e.srcElement;
    } else {
        return;
    }
}