JavaScript DHTML/Document/all
Check if a tag exists
<source lang="html4strict">
<html> <head> <title>A Simple Page</title> <script language="JavaScript"> function findhead1() {
var detectElement = document.all("head1");
if (detectElement == head1)
{
alert("Element \"head1\" exists");
}
} </script> </head> <body onload="findhead1()">
Heading One
</body> </html>
</source>
