/* call this function to automatically ensure a TIME field is converted to format: HH:MM */
function timeFormatValid(formfield) {
	var strval = formfield.value;
	var strvalmod = "";
	var strvalfinal = "";
	var strValidChars = "0123456789";
	var pos = strval.indexOf(":");
	if (strval.length > 0) { /* only act on field value if user has entered something */
		if (pos < 0) {
			if (strval.length == 1 || strval.length == 3) { strval = "0" + strval; }
			for (i=0; i < 4; i++) {
				if (strval.charAt(i) == "" || strValidChars.indexOf(strval.charAt(i)) == -1) { strvalmod += "0"; } else { strvalmod += strval.charAt(i); }
			}
			if (strvalmod.substring(0,2) > 23) { strvalfinal += "23"; } else { strvalfinal += strvalmod.substring(0,2); }
			strvalfinal += ":";
			if (strvalmod.substring(2,4) > 59) { strvalfinal += "59"; } else { strvalfinal += strvalmod.substring(2,4); }
		} else {
			if (strval.length == 2 || strval.length == 4) { strval = "0" + strval; }
			if (strval.substring(0,2) > 23) { strvalfinal += "23"; } else { strvalfinal += strval.substring(0,2); }
			strvalfinal += ":";
			if (strval.substring(3,5) > 59) { strvalfinal += "59"; } else { strvalfinal += strval.substring(3,5); }
		}
		formfield.value = strvalfinal;
	}
}

function dateFormatValid(formfield) {
	var strval = formfield.value;
	var strvalmod = ""; var strvalfinal = ""; var strValidChars = "0123456789";
	var pos1 = -1;
	for (i=0; i <= strval.length; i++) {
		if (strValidChars.indexOf(strval.charAt(i)) == -1) { pos1 = 1; }
	}
	if (strval.length > 5 && pos1 < 0) { /* only act on field value if user has entered valid initial value */
		if (strval.length == 6) {
			strval = strval.substring(0,4) + "20" + strval.substring(4,6);
		}
		strvalmod = strval;
		if (strvalmod.substring(0,2) > 12) { strvalfinal += "12"; } else { strvalfinal += strvalmod.substring(0,2); }
		strvalfinal += "/";
		if (strvalmod.substring(2,4) > 31) { strvalfinal += "31"; } else { strvalfinal += strvalmod.substring(2,4); }
		strvalfinal += "/";
		strvalfinal += strvalmod.substring(4,8);
		formfield.value = strvalfinal;
	} else if (pos1 < 0) {
		formfield.value = "";
	}
}

var checkObjects	= new Array();
var errors		    = "";
var returnVal		= false;
var language		= new Array();
language["header"]	= "The following error(s) occured:"
language["start"]	= "->";
language["field"]	= " Field ";
language["require"]	= " is required";
language["min"]		= " and must consist of at least ";
language["max"]		= " and must not contain more than ";
language["minmax"]	= " and no more than ";
language["chars"]	= " characters";
language["num"]		= " and must contain a number";
language["email"]	= " must contain a valid e-mail address";
// -----------------------------------------------------------------------------
// define - Call this function in the beginning of the page. I.e. onLoad.
// n = name of the input field (Required)
// type= string, num, email (Required)
// min = the value must have at least [min] characters (Optional)
// max = the value must have maximum [max] characters (Optional)
// d = (Optional)
// -----------------------------------------------------------------------------
function define(n, type, HTMLname, min, max, d) {
var p;
var i;
var x;
if (!d) d = document;
if ((p=n.indexOf("?"))>0&&parent.frames.length) {
	d = parent.frames[n.substring(p+1)].document;
	n = n.substring(0,p);
}
if (!(x = d[n]) && d.all) x = d.all[n];
for (i = 0; !x && i < d.forms.length; i++) {
	x = d.forms[i][n];
}
for (i = 0; !x && d.layers && i < d.layers.length; i++) {
	x = define(n, type, HTMLname, min, max, d.layers[i].document);
	return x;       
}
eval("V_"+n+" = new formResult(x, type, HTMLname, min, max);");
checkObjects[eval(checkObjects.length)] = eval("V_"+n);
}
function formResult(form, type, HTMLname, min, max) {
	this.form = form;
	this.type = type;
	this.HTMLname = HTMLname;
	this.min  = min;
	this.max  = max;
}
function validate() {
	if (checkObjects.length > 0) {
		errorObject = "";
		for (i = 0; i < checkObjects.length; i++) {
		validateObject = new Object();
		validateObject.form = checkObjects[i].form;
		validateObject.HTMLname = checkObjects[i].HTMLname;
		validateObject.val = checkObjects[i].form.value;
		validateObject.len = checkObjects[i].form.value.length;
		validateObject.min = checkObjects[i].min;
		validateObject.max = checkObjects[i].max;
		validateObject.type = checkObjects[i].type;
		if (validateObject.type == "num" || validateObject.type == "string") {
		if ((validateObject.type == "num" && validateObject.len <= 0) ||(validateObject.type == "num" && isNaN(validateObject.val))) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['num'] + "\n";
		} else if (validateObject.min && validateObject.max && (validateObject.len < validateObject.min || validateObject.len > validateObject.max)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['minmax'] + validateObject.max+language['chars'] + "\n";
		} else if (validateObject.min && !validateObject.max && (validateObject.len < validateObject.min)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['chars'] + "\n";
		} else if (validateObject.max && !validateObject.min &&(validateObject.len > validateObject.max)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['max'] + validateObject.max + language['chars'] + "\n";
		} else if (!validateObject.min && !validateObject.max && validateObject.len <= 0) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + "\n";
		   }
		} else if(validateObject.type == "email") {
		// Checking existense of "@" and ".". 
		// Length of must >= 5 and the "." must 
		// not directly precede or follow the "@"
		if ((validateObject.val.indexOf("@") == -1) || (validateObject.val.charAt(0) == ".") || (validateObject.val.charAt(0) == "@") || (validateObject.len < 6) || (validateObject.val.indexOf(".") == -1) || (validateObject.val.charAt(validateObject.val.indexOf("@")+1) == ".") || (validateObject.val.charAt(validateObject.val.indexOf("@")-1) == ".")) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['email'] + "\n"; }
		  }
	   }
	}
	if (errors) {
		alert(language["header"].concat("\n" + errors));
		errors = "";
		returnVal = false;
	} else {
		returnVal = true;
   }
}