[jQuery] Not working in IE

Hi! I have a small but pain-in-the-ass problem.
Here is my code:
var ExternalLinks_InNewWindow = '1';
function initSpoilers(context)
{
    var context = context || 'body';
    $('div.spoiler-head', $(context)).click(function(){
        var code = $(this).next('div.spoiler-body').find('textarea').text();
        if(code) $(this).next('div.spoiler-body').html(code);
        $(this).find('div.spoiler-head').toggleClass('unfolded');
        $(this).next('div.spoiler-body').slideToggle('fast');
    });
}
function initExternalLinks(context)
{
    var context = context || 'body';
    if (ExternalLinks_InNewWindow) {
        $("a.postLink:not([@href*='"+ window.location.hostname +"/'])", $
(context))
            .bind("click", function(){ return !window.open(this.href); })
        ;
    }
}
$(document).ready(function(){
    initSpoilers('body');
    initExternalLinks();
});
The problem is that this code working PERFECTLY in firefox but not in
IE: on reload of page spoiler aren't acting at all.
On load page via link the spoilers are working fine :(
What could be wrong?