function Validatetextarea(str) {
    /*var valid = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-";
    var temp;
    strx = new String();
    strx = str;
    for (var i = 0; i < strx.length; i++) {
        if ((strx.charCodeAt(i) == 13) || (strx.charCodeAt(i) == 10)) {
        } else {
            temp = "" + strx.substring(i, i + 1);
            if (valid.indexOf(temp) == "-1") {
                return false;
            }
        }
    }
    return true;*/
    return /^(?! +$)[a-z\d-]+$/i.test(str); 
}