So you're trying to display a div, but because you are changing the URL, the DOM is refreshing and your div is disappearing before you can really see it?
Try changing the div a few seconds before you navigate to the new URL, like this:
function TestOne1() {
document.getElementById("divSub1").style.display = 'block';
setTimeout(function() { window.location.href = "../Test.aspx?One=numberone"; }, 3000);
}
This way, the div will be displayed, and three seconds later, the page will navigate.