//<SCRIPT LANGUAGE="javascript">
<!--
function Is() {
  var agent = navigator.userAgent.toLowerCase();
  this.major = parseInt(navigator.appVersion);
  this.minor = parseFloat(navigator.appVersion);
  this.ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
  this.ns2 = (this.ns && (this.major == 3));
  this.ns3 = (this.ns && (this.major == 3));
  this.ns4b = (this.ns && (this.minor < 4.04));
  this.ns4 = (this.ns && (this.major >= 4));
  this.ie = (agent.indexOf("msie") != -1);
  this.ie3 = (this.ie && (this.major == 2));
  this.ie4 = (this.ie && (this.major >= 4));
  this.op3 = (agent.indexOf("opera") != -1);
  this.win = (agent.indexOf("win")!=-1);
  this.mac = (agent.indexOf("mac")!=-1);
  this.unix = (agent.indexOf("x11")!=-1);
}

var is = new Is();
var dy = 0
var sc = false
var dy_min = -300
var dy_max = 0


if(is.ns4) {
	doc = "document";
	sty = "";
	} 
else if(is.ie4) {
	doc = "document.all";
	sty = ".style";
}

if (is.ie4) { 
	var myObj = eval(doc + '["MLayer"]' + sty)
	var myScObj = eval(doc + '["MScroll"]' + sty)
	myScObj.visibility = "visible"
}

function scrollit(dyr) {
	window.status = ""
	dyn = parseInt(myObj.top)+dyr
	if ((dyn>=dy_min) && (dyn<=dy_max)) {
		myObj.top = parseInt(myObj.top)+dyr
		sc = false
	} else {
		if (dyr<0) { myObj.top = dy_min } else { myObj.top = dy_max }
	}
}

function set_scroll(dyr) {
	dy = dyr
	sc = true
	scrollslowly() 
}

function stop_scroll() {
	sc = false
}

function scrollslowly() {
	window.status = ""
	dyn = parseInt(myObj.top)+dy
	if ((dyn>=dy_min) && (dyn<=dy_max))
	{
		myObj.top = parseInt(myObj.top)+dy
		if (sc) { setTimeout("scrollslowly(dy)", 25) }
	}
}
//-->
//</SCRIPT>