[jQuery] context-based selection in internet explorer 7 doesn't work

[netConnecting - Marvin Schröder]

hello!
 
i have a problem with the context-based selection of elements in a
html-string in internet explorer 7.
 
with the following code: 

var htmltmp = '<div style="width: 1100px;"><img src="test.gif"
width="300" id="testphoto" /></div>'; 

alert($('#testphoto', htmltmp).attr('width')); 

the internet explorer shows "0" and the firefox shows the right "300". 

has anybody a workaround or the solution why this doesn't work?

i`m using jQuery 1.3.2

thanks for your attention.

netCo