<code lang="JavaScript">

function SrchReplace(Text, Search, Replace) {
        while (Text.indexOf(Search)>=0) {
                var i = Text.indexOf(Search);
                Text = Text.substr(0, i)+Replace+Text.substr(i+Search.length);
        }
        return Text;
}


</code>
If parameter Replace is equal to "" the function simplly removes
substring Search from Text string.