if(typeof YAHOO=="undefined")
{
	var YAHOO={};
}

YAHOO.namespace=function()
{
	var a=arguments,o=null,i,j,d;
	for(i=0;i<a.length;++i)
	{
		d=a[i].split(".");
		o=YAHOO;
		for(j=(d[0]=="YAHOO")?1:0;j<d.length;++j)
		{
			o[d[j]]=o[d[j]]||{};
			o=o[d[j]];
		}
	}
	return o;
};

YAHOO.log=function(msg,cat,src)
{
	var l=YAHOO.widget.Logger;
	if(l&&l.log)
	{
		return l.log(msg,cat,src);
	}else{
		return false;
	}
};


YAHOO.extend=function(subc,superc,overrides)
{
	var F=function(){};
	F.prototype=superc.prototype;
	subc.prototype=new F();
	subc.prototype.constructor=subc;
	subc.superclass=superc.prototype;
	if(superc.prototype.constructor==Object.prototype.constructor)
	{
		superc.prototype.constructor=superc;
	}
	
	if(overrides)
	{
		for(var i in overrides)
		{
			subc.prototype[i]=overrides[i];
		}
	}
};

YAHOO.augment=function(r,s)
{
	var rp=r.prototype,sp=s.prototype,a=arguments,i,p;
	if(a[2])
	{
		for(i=2;i<a.length;++i)
		{
			rp[a[i]]=sp[a[i]];
		}
	}else{
		for(p in sp)
		{
			if(!rp[p])
			{
				rp[p]=sp[p];
			}
		}
	}
};

YAHOO.namespace("util","widget","example");