function GetFunctionObjectName(functionObject)
{var toReturn=functionObject.name;if(!toReturn)
{toReturn=""+functionObject
var startOfBraces=toReturn.indexOf("(");var startPosition="function ".length;toReturn=toReturn.substr(startPosition,startOfBraces-startPosition);}
return toReturn;}
function CallParent(instance,parentName)
{parentInstance=eval("new "+parentName+"()");for(var property in parentInstance)
{if(instance[property]==null)
instance[property]=parentInstance[property];}}
function subclass(childClass)
{if(arguments.length>1)
{if(!childClass.statics)
childClass.statics=new Object();childClass.statics.parents={};for(var i=1;i<arguments.length;i++)
{parentPrototype=arguments[i].prototype;for(var property in parentPrototype)
{childClass.prototype[property]=parentPrototype[property];}
childClass.statics.parents[GetFunctionObjectName(arguments[i])]=arguments[i];}
childClass.prototype["parent"]=function(parentName){CallParent(this,parentName);};}}