А вот так?
Радикальный способ
<head>
<style type="text/css">
div{
display: none;
}
</style>
<script type="text/javascript">
function Remove (elem) {
elem.style="";
alert(window.getComputedStyle(elem, "").display);//none
}
</script>
</head>
<body>
<div onclick="Remove(this);" style="display: block; color: red" >Remove</div>
</body>