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//	validation functions and tools

/////////////////////////////////////////////////////////////////////////////////////

function trimLeft(s) {
	var whitespaces = " \t\n\r";
	for(n = 0; n < s.length; n++) { if (whitespaces.indexOf(s.charAt(n)) == -1) return (n > 0) ? s.substring(n, s.length) : s; }
	return("");
}
function trimRight(s){
	var whitespaces = " \t\n\r";
	for(n = s.length - 1; n  > -1; n--) { if (whitespaces.indexOf(s.charAt(n)) == -1) return (n < (s.length - 1)) ? s.substring(0, n+1) : s; }
	return("");
}
function trim(s) {
        return ((s == null) ? "" : trimRight(trimLeft(s))); 
}
function isBlank(field, strBodyHeader) {
	strTrimmed = trim(field.value);
	if (strTrimmed.length > 0) return false;
	//
	alert("\"" + strBodyHeader + "\" is required. Please type a value.");
	///field.class="noticer";
	///field.value=strBodyHeader + " is required";
	///field.value="";
	field.focus();
	return true;
}

function isNumber(field, strBodyHeader) {
	strTrimmed = trim(field.value);
	if (!isNaN(field.value))	return false;
	
	//
	alert("\"" + strBodyHeader + "\" must be a number. Please try again.");
	field.focus();
	field.select();
	return true;

}


function isNumberLength(field, strBodyHeader, nlength) {
	strTrimmed = trim(field.value);
	if (strTrimmed.length >= nlength){
		return false;
	}
	else
	{
	//
	alert("\"" + strBodyHeader + "\" must be a number of at least " + nlength + " digits. Please try again.");
	field.select();
	field.focus();
	
	return true;
}
}


function isEmail(field, strBodyHeader) {
	var strMsg = ""; var chAt  = '@'; var chDot = '.'; var chSpace = ' '; var strEmailAddr = trim(field.value);
	if (strEmailAddr.length == 0) return true;
	if (strEmailAddr.indexOf(chSpace) == -1) {
		var iFirstAtPos = strEmailAddr.indexOf(chAt);
		var iLastAtPos = strEmailAddr.lastIndexOf(chAt);
		if (iFirstAtPos > 0 && iFirstAtPos < (strEmailAddr.length - 1) && iFirstAtPos == iLastAtPos) {
			// look for '.' there must be at least one char between '@' and '.'
			var iDotPos = strEmailAddr.indexOf(chDot, iFirstAtPos + 1);
			if (iDotPos > (iFirstAtPos + 1) && iDotPos < (strEmailAddr.length - 1)) return true;
		}
	}
	alert("Please type a valid Email Address.");
	//alert("Please type in a valid Email Address for field \"" + strBodyHeader + "\"");
	field.focus();
	return false;
}
function isChecked(field, strBodyHeader, nLength) {
	for(i = 0; i < nLength; i++) { if (field.checked) return true;}
	//else
	//{
		alert("\"" + strBodyHeader + "\" is a required field. Please select a choice.");
	//if (nLength > 0)
//		field[0].focus();
	return false;
	//}
}
function isSelected(field, strBodyHeader) {
	for(i=0; i < field.length; i++) { 
	if (field[i].selected && (trim(field[i].value).length > 0)) return true; }
	alert("\"" + strBodyHeader + "\" is a required field. Please select a choice.");
	//field.text=strBodyHeader + "\" is required";
	field.focus();
	return false;
}

function clDelConfirm(varHref, varDescptn){
var val1="Do you reeally want to delete this "+varDescptn;
var val2="";
val2=confirm(val1);
return val2;
}

function valServices(){

var val1=document.form.textfield;
var val2=document.form.textfield6;
var val3=document.form.textfield;

if(isBlank(val1, "Name of Organisation ")){
val1.focus();
	return false;
}
else
{
	if(isBlank(val2, "Telephone ")){
val2.focus();
	return false;
}
else
{
	return true;
}	
}
//return val2;
}
-->