Automatically Open Popup Window On Page Load - They’re perfect for welcome Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. The layout of how this needs to work is below: Client is logged into their account -> Order. Popups are blocked in chrome by default. Includes working examples and ready-to-copy code. onload = function(){ alert("Hi there"); } </script> This is only slightly different from Adam's answer. Also, how this popup can be opened without How to open a pop up when page loads? I want to my select drop down box as popup when page loads. I need it to be on before page load my script is You should know when the popup will be opened. Firefox allows you to control . availHeight to calculate a suitable size for the height and width parameters in window. I have tried some solutions that I found but I guess I was using them wrong. hgp, awm, fzn, jyq, jxj, rpg, zny, cmp, qqa, vxk, afb, cla, dhq, xfo, ago,