// JavaScript Document
function _validate_form(){	// TEST
	return false;
}

function validate_form()
{
	// set page form element
	var form = document.detailForm;
	// set flag to TRUE: default all fields correct
	var flag = true;
	// set element flag to -1: default (field not required validation)
	var ef = -1;	
	// check each field in the form
	
	// verify all other fields
	if(flag) {
		for(i=0; i<form.elements.length; i++) {
			
			ef=0; // presumed valid
			
			// special conditions (avoid validation for fields not required)
			validate_field = true;
			// no conditions...
			
			if(validate_field) {
				// check any field listed
				validate_type  = form.elements[i].id.substr(4,3);
				switch (validate_type) {
					// vt_ : verify text
					case 'vt_':
						if(trim(form.elements[i].value)=='') ef=1;
						if(ef==0) {	// validate email address
							if(trim(form.elements[i].id).indexOf('email')>0) {
								ef = validate_email(trim(form.elements[i].value));
							}
						}
						break;
		
					// vgt : verify group text (at least one field must be populated
					// NOTE : elements must be sequencial in form for this to work AND 2 groups should not follow one another
					case 'vgt':
						i2 = i;	// mark the start of the validation
						cv = trim(form.elements[i].value);
						do {
							i++;
							cv = cv + trim(form.elements[i].value);
						}
						while(form.elements[(i+1)].id.substr(4,3)=='vgt')
						if(cv=='') ef=2;
						
						for(x=i2; x<=i; x++) {
							if(ef==2) form.elements[x].style.backgroundColor = '#FF9999';
							else form.elements[x].style.backgroundColor = '#FFFFFF';
						}
						break;
		
					// vo_ : verify option (select)
					case 'vo_':
						//alert(form.elements[i].id);
						if(trim(form.elements[i].value)=='') ef=1;
						break;
		
					// vr_ : verify radio option
					// NOTE : elements must be sequencial in form for this to work
					case 'vr_':
						cv = "";
						if(form.elements[i].checked) cv = form.elements[i].value;
						do {
							i++; // at least 2 elements in a radio group
							if(form.elements[i].checked) cv = form.elements[i].value;
						}
						while (form.elements[i].id == form.elements[(i+1)].id)
						if(cv.length==0) ef=2;
						
						// special condition (second applicant only)
						// NOTE :  this must occur before the fields implicated
						if(form.elements[i].id=='fld_vr_loan_application' && cv=='joint') applicant2 = true;
						break;
		
					default:
						// reset element flag (non-required element)
						var ef = -1;
						break;
				}
		
				if(ef==1 || ef==2) {	// error on field
					if(ef==1) form.elements[i].style.backgroundColor = '#FF9999';
					flag = false;	// error on form
				} else if(ef==0) {	// reset field if validated
					form.elements[i].style.backgroundColor = '#FFFFFF';
				}
			}
		}
		
		if(!flag) 
		{	alert("Invalid information entered, please complete the highlighted fields (*)."); }
	}
	
	return flag;
}

function validate_email(field)
{
	apos=field.indexOf("@");
	dotpos=field.lastIndexOf(".");
	if (apos<1||dotpos-apos<2) {
		alert("Invalid email address entered, please enter a valid email address.");
		return 1;
	} else {
		return 0;
	}
}