<script>
function doSaveAs(){
        if (document.execCommand){
                document.execCommand("SaveAs")
        }
        else {
                alert("익스플로러 5.x 이상에서만 작동합니다")
        }
}
</script>

<form>
<input type="button" value="현재페이지 저장" onClick="doSaveAs()">
</form>