[jQuery] Working only after refreshing

[poncjusz]

I've got simple code (at the bottom) which move up articleContent its 
margin-top depends on #otherArticles height, its work but only when I refresh 
my site. Is any trick which allows me to make it work correctly?

$(document).ready(function() {
        $("#articleContent").css({ "margin-top": 
-($("#otherArticles").height()+15 });
)};