Check two arrays have elements with same values

Possible Duplicate:
Simplest code for array intersection in javascript

Let's say I have arrays:

[0,1]

and

[1,2,3]

I need to verify whether these arrays have common elements, for this case it would be 1

Using jQuery i check it following way:
1. get length of 1st array
2. get length of 2nd array
3. merge arrays
4. get length of merged array
5. if lenght of merged array not equal lenghts 2 initial arrays,that they have common elements

One line code is:

(event2Zone[0].length+event2Zone[1].length)==$.unique($.merge(event2Zone[0].zo,event2Zone[1].zo)).length

Is there more standard or gracefull way to do the same operation?