function docjslib_setElementBgColor(id, elementColor) {
  if (NS4) eval(id).bgColor = elementColor
  else eval(id).style.backgroundColor = elementColor;
}

Learn more about DOCJSLIB 4.0 in Column 33, DOCJSLIB Version 4.0: Scrollers, Watermarks, and Games.

People who read this tip also read these tips:

• Defining Multiple Filters
• Creating Tooltips
• Alert Dialog Boxes
• Converting a Long Word into a Multi-liner
• The removeExpression() Method