function applyCoupon(btn){

	btn.style.cursor = 'wait';

	form = btn.form;

   	url = '/store/apply-coupon.cgi?o=' + encodeURIComponent(form.oId.value) + '&c=' + encodeURIComponent(form.code.value);
	xmlGet(url, function(){ checkCoupon(btn);});

}

function checkCoupon(btn){
	if (req.readyState == 4){
		if (req.status == 200){
			btn.style.cursor = 'auto';
			form = btn.form;
			if (req.responseText == "FAIL"){
				document.getElementById('coupon-header').innerHTML = '<strong>The code you entered (' + form.code.value + ') is not valid</strong>';
			}else{
				window.location = 'http://' + window.location.hostname + '/store/summary.cgi';
			}
		}
	}
}

function checkOrg(btn){

	form = btn.form;
	
	if ((form.oId.value == "") || (isNaN(form.oId.value))){
		return checkFields(form, 'N');
	}
	
	btn.style.cursor = 'wait';
       
   	url = '/store/validate-organization-code.cgi?o=' + encodeURIComponent(form.oId.value);
	xmlGet(url, function(){ checkSignUp(btn);});

}

function checkSignUp(btn){
	if (req.readyState == 4){
		if (req.status == 200){
			
			btn.style.cursor = 'auto';
			checkFields(form, req.responseText); // this function is included in a separate file.
		}
	}
}

function login(btn){

	form = btn.form;
	
	if (form.sId.value.length != 6){
		alert("Please enter your six digit participant code.");
		form.sId.focus();
		return false;
	}
	
	btn.style.cursor = 'wait';
	obj = document.getElementById('login-popup');
	obj.style.cursor = 'wait';
	
	url = '/participant-login/login.cgi?u=' + encodeURIComponent(form.sId.value) + '&p=' + encodeURIComponent(form.password.value);
	xmlGet(url, function(){ checkLogin(btn);});
}

function checkLogin(btn){
	if (req.readyState == 4){
		if (req.status == 200){
			
			btn.style.cursor = 'auto';
			
			obj = document.getElementById('login-popup');
			obj.style.cursor = 'auto';
			
			if (req.responseText == 'FAIL'){
				txt_fld = document.getElementById('login-txt');
				txt_fld.innerHTML = '<strong>The code and password you provided is not valid.  Please try again.</strong>';
			}else{
				// success
				document.cookie="participant=" +escape(req.responseText);
				window.location = 'http://' + window.location.hostname + '/participant-login/index.cgi';
			}
        }
    }
}

function emailPassword(btn){

	form = btn.form;

    btn.style.cursor = 'wait';
    
	obj = document.getElementById('login-popup');
	obj.style.cursor = 'wait';
	

	url = '/participant-login/forgot-password.cgi?e=' + encodeURIComponent(form.email.value);
	xmlGet(url, function(){ emailSent(btn);});

}

function emailSent(btn){
	if (req.readyState == 4){
		if (req.status == 200){
			
			btn.style.cursor = 'auto';
			
			obj = document.getElementById('login-popup');
			obj.style.cursor = 'auto';
			
			txt_fld = document.getElementById('password-txt');
			if (req.responseText == 'SENT'){
				switchWindow('password-sent-popup');
				txt_fld.innerHTML = '<strong>Forgot Password?</strong> Please enter your email address to have it sent to you.';
			}else{
				txt_fld.innerHTML = '<strong>Your e-mail address was not found.</strong>';
			}
		}
    }
}