Automatically execute any java-script function in HTML page.
<!Doctype HTML>
<html>
<head>
<head>
<body>
<script>
window.onLoad = function(){ <!-- window.onLoad run the javascript function autometically when page load -->
function(0);
}
</script>
<div id="myPic"><img src="pic.jpg"></div>
<script>
function test(x==1){
document.getElementById('myPic').style.display='none';
}else{
document.getElementById('myPic').style.display='block';
}
<script>
</body>
</html>