window.addEvent("domready", function(){
    var status = "";

	    $$('#smart-enquiry input[type=text]', '#smart-enquiry textarea', '#smart-enquiry select').each(function(el) {
	        el.addEvents({                              
	            'blur'   :  function() {
	                this.setStyle('background-color','');
	                        
	                if (this.value.clean() == "" && this.hasClass('required')) {   
	                    // Required field - not filled.
	                    this.highlight('#ee8282');
	                    var status = "invalid";
	                } else if ((this.value.clean() != "" && this.hasClass('required')) ||
	                           (this.value.clean() != "" && !this.hasClass('required'))) {
	                    // Check for valid email
	                    if (this.hasClass('email') && isEmail(this.value.clean())) {
	                        this.highlight('#87ee82');
	                        var status = "valid";
	                    } else if (!this.hasClass('email')){
	                        this.highlight('#87ee82');
	                        var status = "valid";
	                    } else {
	                        this.highlight('#ee8282');
	                        var status = "invalid";
	                    }
	                }
	                
	                // label that will be adopting
	                var adopter = this.getParent();
	                
	                // New status symbol element
	                statusImg = new Element('img', {
	                    'class': 'status ' + status,
	                    'width': '16',
	                    'height': '16'});
	                
	                // Change image source
	                if (status == "invalid") {
	                    statusImg.src = "images/smart-enquiry/exclamation.gif";
	                    statusImg.alt = "This field is required";
	                } else if (status == "valid") {
	                    statusImg.src = "images/smart-enquiry/tick.gif";
	                    statusImg.alt = "This field is filled";
	                }
	    
	                // Check for existing status image
	                if (adopter.getFirst($('img')).hasClass('status')) {
	                    var toReplace = adopter.getFirst($('img'));
	                    // Destroy the status image if this is not a required field
	                    if (this.value.clean() == "" && !this.hasClass('required')) {
	                        toReplace.destroy();
	                    } else {
	                        statusImg.replaces(toReplace);
	                    }   
	                } else if (this.value.clean() != "" || this.hasClass('required')) { 
	                    statusImg.inject(adopter, 'top');
	                }   
	            }
	        });
	    });    

});

function isEmail(address) {
    var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
    if(reg.test(address) == false) {
        return false;
    } else {
        return true;
    }   
}