//whole credits are devoted to orignal author
//
//Use: Call function goto_top()
var goto_top_type = -1;
var goto_top_itv = 0;

function goto_top_timer() {
    var y = goto_top_type == 1 ? document.documentElement.scrollTop : document.body.scrollTop;
    //alert(y);
    var moveby = 15; // set this to control scroll seed. minimum is fast

    y -= Math.ceil(y * moveby / 100);
    if (y < 0)
        y = 0;

    if (goto_top_type == 1)
        document.documentElement.scrollTop = y;
    else
        document.body.scrollTop = y;

    if (y == 0) {
        clearInterval(goto_top_itv);
        goto_top_itv = 0;
    }
}

function goto_top() {
    if (goto_top_itv == 0) {
        if (document.documentElement && document.documentElement.scrollTop)
            goto_top_type = 1;
        else if (document.body && document.body.scrollTop)
            goto_top_type = 2;
        else
            goto_top_type = 0;

        if (goto_top_type > 0)
            goto_top_itv = setInterval('goto_top_timer()', 25);
    }
}




function clickDefaButton(e, buttonid) {
    var bt = document.getElementById(buttonid);
    if (typeof bt == 'object') {
        if (navigator.appName.indexOf("Netscape") > (-1)) {
            if (e.keyCode == 13) {
                bt.click();
                return false;
            }
        }
        if (navigator.appName.indexOf("Microsoft Internet Explorer") > (-1)) {
            if (event.keyCode == 13) {
                bt.click();
                return false;
            }
        }
    }
}