function prepareForm() {
	
	if (!document.getElementById || !document.getElementById('register_form')) return false;
	
	var e = document.getElementById('register_form');
	
	e.onsubmit = function() {
		
		return validation(this);
		
	}
	
}

addLoadEvent(prepareForm);


/* BEGIN: CODE FOR THE ENTIRE FORM VALIDATION */
/* ============================= */
// begin validation of the form
var warning_color = "#FFCCCC";
var normal_color = "#EEEEEE";
	

// Create new main array. Good for empty text fields
var txt_name = new Array() 
// Form field names is listed first followed by a descriptive name to be show in the js pop up if left blank

txt_name[0] = new Array("first_name","First Name") 
txt_name[1] = new Array("last_name","Last Name") 
txt_name[2] = new Array("name","Organization Name") 
txt_name[3] = new Array("city","City") 
txt_name[4] = new Array("state","State") 
txt_name[5] = new Array("zip","Zip Code") 
txt_name[6] = new Array("phone","Telephone") 
txt_name[7] = new Array("email","Email") 
txt_name[8] = new Array("comments","Brief Description of how you intend to use Measures of Health") 

// check for blank text fields
function missing_content(field){
	// check the regular text fields for empty content
	var j;
	var missing_empty = "";
	// [01] CHECK THE TEXT FIELDS FROM THE ARRAY ABOVE
	for (j=0; j<txt_name.length; j++){
		if (field[txt_name[j][0]].value == "") {
			missing_empty+= txt_name[j][1] + "\n";
			field[txt_name[j][0]].style.backgroundColor = warning_color;
		} else {
			field[txt_name[j][0]].style.backgroundColor = normal_color;
		}
	}
	return missing_empty;
}

// email validation
function checkEmail(myForm) {
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,5})+$/.test(myForm)){
		return (true)
	}
	return (false)
}

function checkSelect(e,desc,form) {
	var missing_select = '';
	if (form[e].value == 'no selection') {
		form[e].style.backgroundColor = warning_color;
		missing_select+= desc + "\n";
	} else {
		form[e].style.backgroundColor = normal_color;
	}
	return missing_select;
}

function validation(which){ // validation of the entire form.
	var missing = ""; 
	
	// ck for blank fields
	missing += missing_content(which);
	
	// if the email field is filled in, we need to verify that the email is correct
	if (which["email"].value != ""){
		email = checkEmail(which["email"].value);
	
		if (email == false){
			missing+= "Invalid Email Address\n";
			which["email"].style.backgroundColor = warning_color;
		} else {
			which["email"].style.backgroundColor = normal_color;
		}
	}

	// Insert Additional Validation Here

	// Validate that at least one organization type has been selected
	var orgType = document.getElementById('org_type').getElementsByTagName('input');
	var orgOther = document.getElementById('other_org_type');
	var orgTypeChecked = false;
	
	if (orgOther.value == '') {

		for (var i = 0; i < orgType.length; i++) {
			if (orgType[i].checked) {
				orgTypeChecked = true;
			}
		}

	}	
	
	if ((orgOther.value == '') && (!orgTypeChecked)) {
		missing+= "Please indicate your organization type\n";
	}

	// Validate the organization size and scope
	missing+= checkSelect("org_size","Organization Size",which);
	missing+= checkSelect("org_scope","Organization Scope",which);
	
	// FINALE: is anything missing?
	if (missing != ""){
		missing_hdr = "Please fill in the required information:\n";
		alert (missing_hdr + missing);
		return false;
	} else {	
		return true;
	}
}
/* END: CODE FOR THE ENTIRE FORM VALIDATION */