var configuratorButton = document.getElementById("configurator-button"); var configuratorModal = document.getElementById("configurator-modal"); configuratorButton.onclick = onConfiguratorButtonClick; var isConfiguratorShown = false; function onConfiguratorButtonClick(event) { if(isConfiguratorShown == false) { configuratorModal.style.display = "block"; isConfiguratorShown = true; console.log("Showing Configurator-Modal!"); return; } configuratorModal.style.display = "none"; isConfiguratorShown = false; console.log("Hiding Configurator-Modal!"); }