[jQuery] Animate Variable Concatenate Help

[jQuery] Animate Variable Concatenate Help


I'm trying to get the width of an element, animate it bigger, then
shrink it back to normal size on hover. Here's my function:
$('a.slider').hover(function(){
        var mywidth = $(this).width();
        $(this).animate({width: "240px"});
    }, function(){
        $(this).animate({width: +mywidth+px"});
    });
The line I'm having trouble with is:
$(this).animate({width: +mywidth+px"});
I know its not concatenated right, but I tried a few ways and couldn't
get it to work. What am I doing wrong? Thanks in advanced!