function popUp(URL) {window.open(URL, 'cvndiagram', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=356,height=340,left = 469,top = 347')
}

// validate the required fields for registration form
function validate_reg(form) {
	if(form.event_id) {
		if (form.event_id.selectedIndex==0) {
			alert("Please select an event.")
			form.event_id.focus();
			return false
		}
	}
	
	if (isEmpty(form.first_name.value)) {
		alert("Please enter your first name.")
		select(form.first_name)
		return false
	}
	if (isEmpty(form.last_name.value)) {
		alert("Please enter your last name.")
		select(form.last_name)
		return false
	}
	if (isEmpty(form.email.value)) {
		alert("Please enter your email address.")
		select(form.email)
		return false
	}
	if ((form.email.value.indexOf("@") == -1) || (form.email.value.indexOf(".") == -1)) {
		alert("Please enter a valid email address.");
		select(form.email);
		return false;
	}
	if (isEmpty(form.address_1.value)) {
		alert("Please enter your address.")
		select(form.address_1)
		return false
	}
	if (isEmpty(form.city.value)) {
		alert("Please enter your city.")
		select(form.city)
		return false
	}
	if (isEmpty(form.state.value)) {
		alert("Please enter your state.")
		select(form.state)
		return false
	}
	if (isEmpty(form.zip.value)) {
		alert("Please enter your zip code.")
		select(form.zip)
		return false
	}
	
	/*if(form.credit_card) { // check for payment info
	
		if(isEmpty(form.credit_card.value)) {
			alert("Please enter your credit card number");
			select(form.credit_card)
			return false;
		}
	
		if(form.card_type.selectedIndex==0) {
			alert("Please select the card type.");
			form.card_type.focus();
			return false;
		}
		
		if(isEmpty(form.cvn.value)) {
			alert("Please enter your credit card CVN");
			select(form.cvn)
			return false;
		}
		
		if(isEmpty(form.billing_address_1.value)) {
			alert("Please enter your billing address.");
			select(form.billing_address_1)
			return false;
		}
		
		if(isEmpty(form.billing_city.value)) {
			alert("Please enter your billing city.");
			select(form.billing_city)
			return false;
		}
		
		if(isEmpty(form.billing_state.value)) {
			alert("Please enter your billing state.");
			select(form.billing_state)
			return false;
		}
		
		if(isEmpty(form.billing_zip.value)) {
			alert("Please enter your billing zipcode.");
			select(form.billing_zip)
			return false;
		}
	}*/
	if(form.Session1) { // FOR MAIL EXPO FORM
		var error_str = "";
		var s1 = false;
		var s2 = false;
	
		
		for(i=0;i<form.Session_1.length;i++) {
			if (form.Session_1[i].checked) s1 = true;
		}
		for(i=0;i<form.Session_2.length;i++) {
			if (form.Session_2[i].checked) s2 = true;
		}
		
		
		if(!s1) error_str += "Session 1\n";
		if(!s2) error_str += "Session 2\n";
	
		
		if(error_str!="") {
			alert("Please select an option for each Session:\n\n"+error_str);
			return false;
		}

	}
	
		
	return true;	
	
}


function validate_golf(form) {
		
	if (isEmpty(form.first_name.value)) {
		alert("Please enter your first name.")
		select(form.first_name)
		return false
	}
	if (isEmpty(form.last_name.value)) {
		alert("Please enter your last name.")
		select(form.last_name)
		return false
	}
	if (isEmpty(form.email.value)) {
		alert("Please enter your email address.")
		select(form.email)
		return false
	}
	if ((form.email.value.indexOf("@") == -1) || (form.email.value.indexOf(".") == -1)) {
		alert("Please enter a valid email address.");
		select(form.email);
		return false;
	}
	if (isEmpty(form.address_1.value)) {
		alert("Please enter your address.")
		select(form.address_1)
		return false
	}
	if (isEmpty(form.city.value)) {
		alert("Please enter your city.")
		select(form.city)
		return false
	}
	if (isEmpty(form.state.value)) {
		alert("Please enter your state.")
		select(form.state)
		return false
	}
	if (isEmpty(form.zip.value)) {
		alert("Please enter your zip code.")
		select(form.zip)
		return false
	}
	if (isEmpty(form.teamname.value)) {
		alert("Please enter your Team Name.")
		select(form.teamname)
		return false
	}
	if (isEmpty(form.player1.value)) {
		alert("You must enter at least 1 player's name.")
		select(form.player1)
		return false
	}
	
	
}