function isNull(fieldValue) {
	if (fieldValue == null) {fieldValue=''};
		return (fieldValue.length == 0);	
}

function isMatch(field1,field2) {
	if ((field1 != '' && field1 != null) && (field2 != '' && field2 != null))
		return (field1 == field2);
}

function isFieldTooLong(field,valLength){
	if (field != null && field != '')
		return (field.length > valLength);
}

function isFieldTooShort(field,valLength){
	if (field != null && field != '')
		return (field.length < valLength);
}
function setDropDown(v,dd) {
	for (i = 0; i < dd.options.length - 1; i++ ) {
		if ( dd.options[i].value == v ) {
			dd.selectedIndex = i;
			return true
		}
	}
	return false;
}
function isIn(elt, list){
	for(var i=0; i < list.length; i++){
		var tempArray = list[i].split(":")
		if( tempArray[0] == elt ){
			return tempArray;
		}
	}
	return false;
}
function stripCharsInBag (s, bag){
	var i;
	var returnString = "";
	for (i = 0; i < s.length; i++) {
		var c = s.charAt(i);
		if (bag.indexOf(c) == -1) returnString += c;
	}
	return returnString;
}
function hasChars(str){
	if(str == null)
		return false;
	str = str.toLowerCase();
	for(var i = 1; i < arguments.length ; i++) {
		arguments[i] = arguments[i].toLowerCase();
		if( str.indexOf( arguments[i] ) != -1 )
			return true;
	}
	return false;
}
function isInteger(s){
	if (s != null && s != ''){
		var re = /^\d+$/;
		return (s.search(re) == -1) ? false : true;
	} else {
		return true;
	}	
}
function fillOtherField(field1,field2){
	if (field1 != null && field1.value != '' && (field2.value != null && field2.value == '')){
		field2.value = field1.value;
	}
}