IE8 JavaScript: -ms-filter: "alpha(opacity=50)";

How can I do this with JavaScript for IE8?
      -ms-filter: "alpha(opacity=50)";
LVL 16
hankknightAsked:
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Adoryc666Commented:
Here you go that should work in all the browsers.
.shaded {
-ms-filter: “progid:DXImageTransform.Microsoft.Alpha(Opacity=0.5)”;
filter: alpha(opacity=0.5);
-khtml-opacity: 0.5;
-moz-opacity: 0.5;
opacity: 0.5;
}

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Adoryc666Commented:
Sorry it should be.
.shaded {
-ms-filter: “progid:DXImageTransform.Microsoft.Alpha(Opacity=50)”;
filter: alpha(opacity=50);
-khtml-opacity: 0.5;
-moz-opacity: 0.5;
opacity: 0.5;
}

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StealthyDevCommented:
I think the below code should work?

element.style.filter = 'alpha(opacity:50)';

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StealthyDevCommented:
You can also check: http://www.javascriptkit.com/filters/filterschecklist.shtml for more detailed filters.
StealthyDevCommented:
It says that the code attached may work:


element.filters.item("DXImageTransform.Microsoft.Alpha").Opacity=50

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