// JavaScript Document
var timeout;
var y = 0;
var step = 2;
function down(){
if (y < 0){y=0;}
var e=document.getElementById("sc_kaijouti");
if(e.scrollTop<e.scrollHeight-e.offsetHeight){
e.scrollTop = y;
//window.status = y; //テスト用
y = y + step;
timeout=setTimeout("down()",2);
}
}

function up(){
if (y >=0 ){
document.getElementById("sc_kaijouti").scrollTop = y;
//window.status = y; //テスト用
y = y - step;
}
timeout=setTimeout("up()",20);
}

function stop1(){
clearTimeout(timeout);
}