js/css modal all browser support from ie6
example:
var a = new zmodal();
a.width = '250';
a.height = '75';
a.type = 'html';
a.title = 'Please insert nickname';
a.content = '<p><input type="text" id="login_name" /><input id="login_send" type="button" value="send" /></p>';
a.main();
a.onClose = function()
{
a = null;
new setIntervals('open');
};