Is creating a function like getels(id) bad coding convention?

[RudiRadler]

Basically, I've gotten really lazy, and I've seen way too many bugs caused by typoes in really long function names, so I made a function in javascript\[code\]function getels(id){ return document.getElementById(id);}\[/code\]Is this OK coding convention? Does it slow down the code noticeably?
Does it really matter if I use it, or should I not. It is a fairly general question, with javascript being the example I use here.