Question : Replace space in variable with _

I don't really use java script much, but I came across this problem.  I have a few different showrooms for a company that have their own websites (essentially, city.aspx).  I have a list of the business locations stored in a pre-existing script, but if a city has a space in it (ie: Bull Creek or New York), I have a problem because they would really be named Bull_Creek.aspx or New_York.aspx, respectively.

How do I change New York to New_York?  Here is an excerpt from my script:

/'+cityshowroom+'.aspx">

I need an if statement that triggers the replacement if cityshowroom has a space in it.

Answer : Replace space in variable with _

How about use the replace() function to change the line to:

/'+cityshowroom.replace(" ", "_") +'.aspx">