Yahoo namespace function

YUI namepace.js

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