This event handler will execute the instruction(s) when the object it has been assigned to loses 'focus', or becomes 'blurred'. For example, when a cell of a table has been made active by either clicking on it or tabbing to it, you've satisfied its 'focus'. When you move the 'focus' away, that cell has become 'blurred'.
syntax:
document.onBlur = function()
The onBlur Event Handler is used with the following:
A APPLET AREA BUTTON CAPTION DIV EMBED FIELDSET IMG LEGEND MARQUEE OBJECT SELECT SPAN TABLE TD TEXTAREA TH TR button checkbox layer password radio reset submit text window