如何在页面加载之前加载jquery“模态窗口”？

I'm making a site in two language ,I want to give a "jquery Modal Window" before English page load to give a option to choose another language link (on a modal window).If user will click on Second language link he will go for that page and if he want to stay with english he just needed to close the window. I'm making a site in two language ,I want to gi