Issue with adding self closing Elements

Was using your excellent foundation this morning on a mobile site we are working on. Found that it returns a 'NO_MODIFICATION_ALLOWED_ERR: DOM Exception 7' on selfclosing elements in WebKit @ least e.g.:

el.appendChild(new Element('img', {'src':'/images/vehicle-search/soldflaglist.gif','class':'soldflag'}));

The following fix to Element method seems to fix he issue:

/* * Simplified element creation function * @param type {string} The type of element to create. * @param atts {object} Attributes to attached to the HTMLElement. (optional) * @param content {string} Set the innerHTML of the element. (optional) / var Element = function(type, atts, content) {

this.el = document.createElement(type);

for(var attr in atts) {
    this.el.setAttribute(attr, atts[attr]);
}
if (!(/(area|base|basefont|br|hr|img|input|link|meta)/).test(type)) //ND - added this line to filter self closing
this.el.innerHTML = content || '';
return this.el;

};