function scroll() {
	if(!pause){
		if(- pos <= (height - 150)){
			pos -= 1;
			sc_div.style.marginTop = pos+'px';
		}
		else {
			pos = 10;
			sc_div.style.marginTop = pos+'px';
		}		
	}
	setTimeout('scroll()', 200);
}

function up(){
	pause = true;
	if(on){
		if (- pos <= height - 150){
			pos -= 3;
			sc_div.style.marginTop = pos+'px';
		}
		setTimeout('up()', 200);
	}
}

function down(){
	pause = true;
	if (on){
		if (pos < 10){
			pos += 3;
			sc_div.style.marginTop = pos+'px';
		}
		setTimeout('down()', 100);
	}
}

var on = false;
var pause = false;
var sc_div = document.getElementById('defil');
var height =sc_div.offsetHeight;
var pos = 10;
sc_div.style.marginTop = '10px';
onload = scroll();