Checking that a folder exists

[Coogan]

Can anyone help me with this 'If then else' statement.

I want to check that a folder exists and if it does then it opens that folder in a new window and if it doesn't exist then I want it to open an error page in the current window.

if (this.form.url.value exists) then window.open( this.form.url.value) else document.location = 'error.htm';

I am trying to figure out the (this.form.url.value exists) code. Can anyone help??

 

[Coogan]

Sorry this post is in the wrong forum...

My mistake....