javascript STYLE runtimeStyle

Returns a style object whose individual style properties convey values only if they are explicitly set via the regular style sheet processes. Unlike the currentStyle object, system default style sheet properties are not reflected. You can set individual style properties of this runtimeStyle object, but doing so transcends (some might say violates) normal cascading precedence. Any property you assign by script overrides all other settings for that style property governing that element, including values assigned to the element tag's style attribute and style property. For example, if you assign the value red to an element's style.color property, and assign the value green to the same element's runtimeStyle.color property, the element's text appears in green, even though the more specific style.color property still preserves the red value. At that point the element's currentStyle.color property also returns green, because that is the effective style governing the element at that instant.