This script allow dynamically load content with images, that has no height attribute. Nyromodal version.

modalwindowimageheightfix.js

var secret  = $('<div>').attr('id', 'secret-meter'),
    loadNow = 0,
    loadTotal = 0;
$('body').prepend(secret);

$('.dialog').click(function(){
    var url = $(this)[0].href,
        loadWindow = function() {
            $.nmData(secret.html(), {
                closeButton: '<a href="#" class="nyroModalClose nyroModalCloseButton nmReposition" title="close"></a>',
                sizes:{
                    minH: secret.height()
                }
            });
        }
    $.get(url, function(data) {
        secret.html(data);
        
        // почистим пустые параграфы
        secret.find('p').each(function() {
            var self = $(this);
            if(self.html().replace(/\s|&nbsp;/g, '').length == 0)
                self.remove();
        });
        
        secret.find('img').each(function() {
            loadTotal++;
            
        });
        
        if(loadTotal > 0)
            secret.find('img').each(function() {
                $(this).load(function(){
                    loadNow++; 
                    
                    if(loadNow >= loadTotal) {
                        loadWindow();
                    }
                });
            });
        else
            loadWindow();
    });
                
    return false;
});