// JavaScript Document

function check_message(action_page){
	var form_names = new Array("First Name","Last Name","Email","Message");
	var form = document.getElementById("message_form");
	var errors = 0;
	var error_message = "Please Fill Out The Following:" + "\n";
	
	for(var i=0; i<form.elements.length-2; i++){
		if(!form.elements[i].value.length){
			error_message += form_names[i] + "\n";
			errors++;
		}
	}
	
	if(errors>0){
		alert(error_message);
	}else{
		form.action = action_page;
		form.submit();
	}
}

function check_participation_message(action_page){
	var form_names = new Array("No First Name Entered","No Last Name Entered","No Email Entered","No Study Name(s) Selected");
	var form = document.getElementById("message_form");
	var errors = 0;
	var error_message = "The Follow Errors Occured:" + "\n\n";
	var study_checks = 0;
	
	//check text inputs
	for(var i=0; i<form.elements.length; i++){
		if(!form.elements[i].value.length){
			error_message += form_names[i] + "\n";
			errors++;
		}
	}
	
	//check checkboxes
	for(var n=0; n<form.study.length; n++){
		if(form.study[n].checked){
			study_checks++;
		}
	}
	if(study_checks==0){
		error_message += form_names[4] + "\n";
		errors++;
	}
	
	if(errors>0){
		alert(error_message);
	}else{
		form.action = action_page;
		form.submit();
	}
}