x = 92;

contentWidth = 380;
contentHeight = 250;

startPoint = 0;

function up() {
	scrollId = setInterval('move_up()', 1);
	return false;
}

function down() {
	scrollId = setInterval('move_down()', 1);
	return false;
}

function move_up() {
	if(contentHeight < 650) {
		startPoint++;
		contentHeight++;
		x--;
		scroll();
	}
}

function init() {
	if(document.getElementById) scroll = scroll_ie;
	else if(document.layers) scroll = scroll_ns;
}

function move_down() {
	if(contentHeight > 250) {
		startPoint--;
		contentHeight--;
		x++;
		scroll();
	}
}

function scroll() {

}

function scroll_ns() {
	document.layers["content"].top = x;
	document.layers["content"].clip.top = startPoint;
	document.layers["content"].clip.right = contentWidth;
	document.layers["content"].clip.bottom = contentHeight;
	document.layers["content"].clip.left =  0;
}

function scroll_ie() {
	document.getElementById("content").style.top = x;
	document.getElementById("content").style.clip = 'rect(' + startPoint  + ',' + contentWidth + ',' + contentHeight + ',' + 0 + ')';

}

function stop(){
	clearInterval(scrollId);
	return false;
}