//coding=utf-8
var page_height=0;
var scroll_y=-1;
function main(){
page_height=parseInt($('#page').css('height'))-200;
scroll_page();
$('#page').prepend("<div style='height:210px;'></div>");
self.scrollTo(0,210);
$('#page').append("<div style='height:210px;'></div>");
}
function scroll_page(){
if (top.dboard_scroll==1){
cur_y=self.pageYOffset || (document.documentElement && document.documentElement.scrollTop) || (document.body && document.body.scrollTop);
self.scrollTo(0,cur_y+1);
if (cur_y==scroll_y) self.scrollTo(0,0);
scroll_y=cur_y;
}
setTimeout('scroll_page()',50);
}