/******************************************
* Scrollable content script II- © Dynamic Drive (www.dynamicdrive.com)
* Visit http://www.dynamicdrive.com/ for full source code
* This notice must stay intact for use
******************************************/

//specify speed of scroll (greater=faster)
//var speed=5;
//window.onload=getcontent_height;


var crossobj;
var contentheight;

function movedown() {

var cheight = crossobj.offsetHeight *  -1 + boxHeight;
var fTop = 0;

if (crossobj.style.top)
   fTop = parseInt(crossobj.style.top); 

	if ( fTop >= cheight) {
		crossobj.style.top = fTop - speed + "px";
	}

	crossobj.top -= speed;
	movedownvar = setTimeout("movedown()",20);
}

function moveup() {
	var fTop = 0;

	if (crossobj.style.top)
   		fTop = parseInt(crossobj.style.top); 

 	if ( fTop < 0 )
		crossobj.style.top = fTop + speed + "px";
		
	moveupvar = setTimeout( "moveup()", 20 );

}

function scroll_init() {
   crossobj=document.getElementById? document.getElementById("tcontext") : document.all.content;
   contentheight=crossobj.offsetHeight;
}