Toggle HTML Element

//Just Design of a Web Form
Enter the Text:<input id="Text1" type="text" />
<input id="Button1" type="button" value="button" onclick="toggle()" />

//JavaScript to toggle the HTML Element
<script type="text/javascript">
function toggle(){
document.getElementById('Text1').style.display == '' ? document.getElementById('Text1').style.display = 'none'
: document.getElementById('Text1').style.display = '';
}
</script>