var min = 320;      //
var max = 0;
var moving_speed = 10  //
var moving_amount = 10  //
var action_time = 500   //
function left_move_init() {
    if(!document.getElementById("quickmenu")==""){
	itm = document.getElementById("quickmenu");
    itm.set_pos = function(y){itm.style.top=y+"px";};
    itm.y = min;
    itm.set_pos(itm.y);
    max = document.documentElement.scrollHeight - itm.scrollHeight - min;
    setTimeout(left_move_func, moving_amount);
	}
}
function left_move_func() {
    itm = document.getElementById("quickmenu");
    tmp = document.documentElement.scrollTop + min;
    itm.y += Math.floor((tmp-itm.y)/moving_speed);
    if( itm.y>max ) itm.y = max;
    if( itm.y<min ) itm.y = min;
    itm.set_pos(itm.y);
    setTimeout(left_move_func, moving_amount);
}
setTimeout(left_move_init, action_time);