Trim, Mouse Hover Pointer Functions using JAVASCRIPT

Trim Function

Function: trim
Input : ' Test Trim Function ', ''
Output: 'Test Trim Function'
Example:

trim(document.getElementById(varUB).value, '')

function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}
function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

Change Button Mouse Hover Pointer

Input: Button control client id
Example:

<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnMouseOver="onMouseOver(this);" OnMouseOut="onMouseOut(this);" />

function onMouseOver(btnCntl) {
    btnCntl.style.cursor = 'hand';
}
function onMouseOut(btnCntl1) {
    btnCntl1.style.cursor = 'default';
}