function tagSize () {
    var arrPs = document.getElementsByName("trank");
    for(i = 0; i < arrPs.length; i++) { 
        var Pixels = Math.floor(Math.random()*10); 
        arrPs[i].className = "rank-" + Pixels; 
    }
}
$(function() {
    $(".dialog").dialog({
        autoOpen: false,
        bgiframe: false,
        modal: true,
        width: '99%',
        height: 'auto'
    });
    $('.picture-gallery a').click(function(){
        $('.dialog').dialog('open');
        $('.dialog img').attr('src',this.href);
        return false;
        });
});