请问如何设置框架集里点击连接后保持样式_html/css_WEB-ITnose

如题，框架分左右，左边菜单点击后的连接颜色，如：红色，直到点击其他菜单连接才恢复原来的颜色，如：黑色

回复讨论(解决方案)

要写js 动态改变class 然后再给class写样式~

CSS:
.MM {
width: 182px;
margin: 0px;
padding: 0px;
left: 0px;
top: 0px;
right: 0px;
bottom: 0px;
clip: rect(0px,0px,0px,0px);
}
.MM a:link {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
line-height: 26px;
color: #333333;
background-image: url(images/menu_bg1.gif);
background-repeat: no-repeat;
height: 26px;
width: 182px;
display: block;
text-align: center;
margin: 0px;
padding: 0px;
overflow: hidden;
text-decoration: none;
}
.MM a:visited {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
line-height: 26px;
color: #333333;
background-image: url(images/menu_bg1.gif);
background-repeat: no-repeat;
display: block;
text-align: center;
margin: 0px;
padding: 0px;
height: 26px;
width: 182px;
text-decoration: none;
}

.MM a:hover {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
line-height: 26px;
font-weight: bold;
color: #006600;
background-image: url(images/menu_bg2.gif);
background-repeat: no-repeat;
text-align: center;
display: block;
margin: 0px;
padding: 0px;
height: 26px;
width: 182px;
text-decoration: none;
}

.MM a:active {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
line-height: 26px;
color: #333333;
background-image: url(images/menu_bg2.gif);
background-repeat: no-repeat;
height: 26px;
width: 182px;
display: block;
text-align: center;
margin: 0px;
padding: 0px;
overflow: hidden;
text-decoration: none;
}

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