/*$Header: /home/cvs/www.intunet.co.uk.new/public_html/scripts/common.js,v 1.11 2006/12/07 17:04:54 matthew Exp $*/


var is_safari = (document.childNodes)&&(!document.all)&&(!navigator.taintEnabled)&&(!navigator.accentColorName)?true:false;
var is_ie55 = (document.all && document.fireEvent && !document.createComment);

//attach events
function attachEventListener(target, eventType, functionRef,capture){
    if (typeof target.addEventListener != "undefined"){
        target.addEventListener(eventType, functionRef, capture);
    } else if (typeof target.attachEvent != "undefined"){
        target.attachEvent("on" + eventType, functionRef);
    } else {
        eventType = "on" + eventType;

        if (typeof target[eventType] == "function"){
            var oldListener = target[eventType];

            target[eventType] = function(){
                oldListener();
                return functionRef();
            };
        } else {
            target[eventType] = functionRef;
        }
    }
}


//for ie 5 node and tag need to be set it does not understand '*'
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}

	return classElements;
}


function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}


 function getTarget(e){
    var targ;
    if (!e) e = window.event;
    if (e.target) targ = e.target;
    else if (e.srcElement) targ = e.srcElement;
    return targ;
}


NCS = new Object();
NCS.arrInputs =['company_town','company_county','company_postcode','invoice_town','invoice_county','invoice_postcode']
NCS.win_ie_ver = parseFloat(navigator.appVersion.split("MSIE")[1]);

pageInit = function(){

NCS.setupFieldEmptying();


}
NCS.setupFieldEmptying = function(){
  var arr = NCS.arrInputs
  var int_len = arr.length;
  
	for (i = 0, j = 0; i < int_len; i++) {
	 var str = arr[i];
	 var obj = $(str);
	 if(obj)
	   attachEventListener(obj, 'focus', NCS.emptyField, false);  
	}
}
NCS.emptyField = function(e){
  obj = getTarget(e);
  if(obj.value.toLowerCase() == obj.id.split('_')[1])
    obj.value = '';
}



attachEventListener(window, 'load', pageInit, false);