/*
	functions.forms.js
	Form Validation / Interactivity Functions
	Created: Nov. 5, 2008
	Creator: Matt Kircher
*/

/* CONTACT FORM */
function setupContactForm(){
	if($('#contactForm').length){
		
		//remove required attention classes from required fields
		$('form .required').bind('change', function(){
			if($.trim($(this).val()) != ""){
				$(this).removeClass('required_attention');
				if($(this).get(0).nodeName == "SELECT"){
					if($(this).next().attr('class') == "select_required_attention"){
						$(this).next().remove();
					}
				}
			}
		});
		
		//bind blur / focus actions
		if(!$.browser.msie){
			$('form input[@type="text"]')
			.bind('focus', function(){ $(this).addClass('highlighted_form_field'); })
			.bind('blur', function(){  $(this).removeClass('highlighted_form_field'); });
		}
		
		//set focus to first form field
		$('form input[@tabindex="1"]').focus();
	}
}
function validateContactForm(f){
	
	var specificForm = ($.trim(f) == "")?'form':f;
	
	//setup valid object
	var valid = { status:true, response:'', element:null };
	
	//remove classes, go through and check for non-values
	$(specificForm+' .select_required_attention').remove();
	$(specificForm+' .required')
	.removeClass('required_attention')
	.each(function(){
		if(($(this).val() == "" || $(this).val() == null)){
			$(this).addClass('required_attention');
			valid.status = false;
			valid.response = 'One or more required fields have not been completed. Please complete them and resubmit the form.';
			if(valid.element == null){ valid.element = $(this); }
			
			if($(this).get(0).nodeName == "SELECT"){
				$(this).after('<span class="select_required_attention">&lsaquo;&mdash;</span>');
			}
		}
	});
	
	//if email is not of the form 'name@email.com', don't validate
	if(valid.status){
		$(specificForm+' input.required[@name="email"]').each(function(){				
			if(!validateEmail($(this).val())){
				$(this).addClass('required_attention');
				valid.status = false;
				valid.response = 'Please supply a valid email address.';
				valid.element = $(this);
			}
		});
	}
	
	//display alert, focus on first non-valued field
	if(!valid.status){ alert(valid.response); $(valid.element).focus(); }
	return valid.status;
}
function validateEmail(e){
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	return filter.test($.trim(e));
}