var TINY = {};

function T$(id) { return document.getElementById(id) }
function T$$$() { return document.all ? 1 : 0 }

TINY.scroller = function() {
    return {
        init: function(a, c, b, s, d) {
            
            a = T$(a); a.c = c; a.s = s; c = T$(c); b = T$(b); s = T$(s); a.n = d || 0;
            b.style.display = 'block'; a.style.overflow = 'hidden';
            var h = a.offsetHeight, t = c.offsetHeight;
            if (t < h) {
                b.style.display = 'none'
            } else {
                a.m = h - t; a.d = t / h; s.style.height = (h * (h / t)) + 'px'; s.style.top = b.style.top = 0;
                s.onmousedown = function(event) { TINY.scroller.st(event, a.id); return false };
                s.onselectstart = function() { return false }
            }
            a.l = b.offsetHeight - s.offsetHeight
        },
        st: function(e, f) {
            var a = T$(f), s = T$(a.s); a.bcs = TINY.cursor.top(e); a.bct = parseInt(s.style.top);
            if (a.mv) { this.sp(f) }
            a.mv = function(event) { TINY.scroller.mv(event, f) };
            a.sp = function() { TINY.scroller.sp(f) };
            if (T$$$()) {
                document.attachEvent('onmousemove', a.mv); document.attachEvent('onmouseup', a.sp)
            } else {
                document.addEventListener('mousemove', a.mv, 1); document.addEventListener('mouseup', a.sp, 1)
            }
            if (a.d) { s.className += ' ' + a.n }
        },
        mv: function(e, f) {
            var a = T$(f), m = TINY.cursor.top(e) - a.bcs + a.bct, s = T$(a.s), c = T$(a.c);
            if (m >= 0 && m < a.l) {
                s.style.top = m + 'px'; c.style.top = (m * -1 * a.d) + 'px'
            } else if (m < 0) {
                s.style.top = 0; c.style.top = 0
            } else if (m > a.l) {
                s.style.top = a.l + 'px'; c.style.top = a.m + 'px'
            }
        },
        sp: function(f) {
            var a = T$(f), s = T$(a.s); if (a.d) { s.className = s.className.replace(' ' + a.n, '') }
            if (T$$$()) {
                document.detachEvent('onmousemove', a.mv); document.detachEvent('onmouseup', a.sp)
            } else {
                document.removeEventListener('mousemove', a.mv, 1); document.removeEventListener('mouseup', a.sp, 1)
            }
            a.mv = 0;
        }
    }
} ();

TINY.cursor = function() {
    return {
        top: function(e) {
            return T$$$() ? window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop : e.clientY + window.scrollY
        }
    }
} ();