设立弹出窗淡出后 主界面背景不灰

mx|Alert{
??? modal-transparency:0.0;
??? modal-transparency-blur:0;
}

s|TitleWindow.loginWindowStyle
{
??? backgroundAlpha: 0.8;
/*??? backgroundColor: #FEE1E2;*/
??? backgroundColor: #7ECCF7;
??? cornerRadius: 35;
??? dropShadowVisible: true;
??? skinClass: ClassReference("IaasWindowSkin");
??? textAlign: left;
??? /* 设置弹出窗后的主窗口的模糊效果为透明*/
??? modal-transparency:0.0;
??? modal-transparency-blur:0;
}