Internet Explorer, if I am understanding correctly, will properly run the code:

var div = document.createElement("p");
div.appendChild(document.createTextNode("Testing"));
document.getElementsByTagName("body")[0].appendChild(div);
    

But will die on this code:

var para = document.createElement("div");
para.appendChild(document.createTextNode("Also Testing"));
document.getElementsByTagName("body")[0].appendChild(para);
    

Try it:

Dammit all; it is doing it in my program, but not here... Why?

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Ahh, it only happens when the page is loading and it only happens if all the content in the page is enclosed in <div>s. Now the variable name doesn't seem to matter... Damned IE...