$(function() {
        embedYT();
});

function embedYT() {
    $('a[href*="youtube"]').each( function() {
            var videoRegExp = /.*v=([^&]*)/;
            var video = videoRegExp.exec(this.href)[1];
            $(this).replaceWith('<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/'+video+'?hl=sv_SE&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/'+video+'?hl=sv_SE&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>');
            });
}