kustom klone method

cloneIt.js

function clone(src) {

  function mixem(src, dst, fnc) {
		var i, em, nm, j = {};
		for(nm in src){
			j = src[nm];
			if(!(nm in dst) || (dst[nm] !== j && (!(nm in em) || em[nm] !== j))){
				dst[nm] = fnc ? fnc(s) : j;
			}
		}
		return dst;
	}

  	// this handles any: non-object, or function
	if(!src || typeof src != "object" || Object.prototype.toString.call(src) === "[object Function]"){
		return src;
	}

	if(src.nodeType && "cloneNode" in src){
		return src.cloneNode(true);
	}

	if(src instanceof Date){
		return new Date(src.getTime());
	}

	if(src instanceof RegExp){
		return new RegExp(src);
	}

	var r, i, l;
	if(src instanceof Array){
		r = [];
		for(i = 0, l = src.length; i < l; ++i){
			if(i in src){
				r.push(clone(src[i]));
			}
		}
		// don't clone functions... performance
		//		}else if(d.isFunction(src)){
		//			// function
		//			r = function(){ return src.apply(this, arguments); };
	}
	else{
		r = src.constructor ? new src.constructor() : {};
	}
	return mixem(r, src, clone);
}