var openMyModal = function(source)   
{   
    modalWindow.windowId = "myModal";   
    modalWindow.width = 600;   
    modalWindow.height = 500;   
    modalWindow.content = "<iframe width='600' height='500' frameborder='0' scrolling='no' allowtransparency='true' src='" + source + "'></iframe>";   
    modalWindow.open();   
};