// add an event to an object. This should makes sure that previous 
// events will be run and that there will be no memory leaks
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
			
			return 1
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
				
			};
			
			return 1
		}
	};
}();

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
};

addEvent(window,'unload',EventCache.flush);

function enterToTab(event) {
  if(event.keyCode==13) 
  {
  	event.keyCode=9;
  }	
};

window.a4jStatusIndicatorDisabled = false;


function showDiv(divName) {
	document.getElementById(divName).style.display = "block";
}

function hideDiv(divName) {
	document.getElementById(divName).style.display = "none";
}

function ajaxRequestContainsErrors() {
	return document.getElementById("maximumSeverity").value == "2";
}

function cursor_wait() {
	document.body.style.cursor = 'wait';
}

function cursor_clear() {
	document.body.style.cursor = 'default';
}