3 wtf Internet Explorer Javascript Errors

• Invalid property value. bodyStyle: 'background-color: <-space_here#dfe8f7;'. Without space it works perfectly. You can find bodyStyle setting in ExtJs control constructors.
• Unkown runtime error Ext.DomHelper.overwrite("_id_here_", '       ');. You cannot set innerHTML of table in Explorer directly. Use deleteRow/appendRow methods.
• Invalid source HTML for this operation (also known as Unknown runtime error) $('span').innerHTML += <div>...</div>''. You cannot insert a block element inside a non-block element

For me, these errors became a revelation =). Mainly because of the fantastically useful error messages.