-moz-opacity Demo

part1: css

语法: -moz-opacity : fValue; (fValue为透明度的百分比)

.opacity
{
	-moz-opacity: 0.4;
	background-color: #003399;
	border: 4px solid #003300;
	padding: 30px;
}

part2: DHTML

语法: object.style.MozOpacity = fValue; //(fValue为透明度的百分比)

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