Fairly Realistic

Sometimes you just have to get rid of children. I have a table with tabular data in it and a title row at the top. When a button is clicked, I need the table to remove all rows that are not the first one (the one with the column titles). I wrote a function called RemoveAllChildren() that removes every row except for the first one. (Yes, I know the function name is a lie!) It took me longer than I thought it would so I thought I would share the code:

function RemoveAllChildren(id)
{
    var table = document.getElementById(id);
    var tbody = table.getElementsByTagName("tbody");

    while(tbody[0].childNodes.length > 1)
    {
        if(tbody[0].childNodes[1].innerHTML != "undefined")
        {
            tbody[0].removeChild(tbody[0].childNodes[1]);
        }
    }
}