$("loginForm").onsubmit = doLogin;

function doLogin() {
	var form = $("loginForm");
	var secureLoginCheckbox = $("secureLogin");
	if(secureLoginCheckbox.checked) {
		var currentLocation = 
		  document.location.toString().replace(/^(https?:\/\/.*?\/).*/, "$1"); // ^(https://.*?/).*
		form.action =
		  currentLocation.replace(/^http:/, "https:").replace(":8080", ":8443") + 
		  form.action.replace(/^.*\//, "");
	}
	return true;
}