/**

* Scrolling Script 1.0

* --------------------

* Copyright: Adrian Suter - Netpilots, Switzerland

* Last Modification: February 2004

* Needs: dhtml.js

* Divs: scrollUp, scrollDown, inhalt

*/



var direction  = 0;

var speed      = 4;

var looping    = null;

var doc_width  = null;

var doc_height = null;

var checkEOL   = null;



function scrollUp() {

	if ( direction == 0 )

    {

	    direction = 1;

	    scrollStart();

    }

}



function scrollDown() {

	if ( direction == 0 )

    {

	    direction = -1;

	    scrollStart();

    }

}



function scrollStart() {

    looping = window.setInterval("moveInhalt()", 1);

}



function scrollStop() {

    direction = 0;

    window.clearInterval(looping);

}



function moveInhalt() {

    var inhalt = getElem("id", "inhalt", null);

    var newPos = parseInt(inhalt.style.top) + speed * direction;

    if ( newPos > 0 ) newPos = 0;



    /* Avoid scrolling too much (only DOM and IE) */

    if ( checkEOL == "yes" && (DOM || IE) ) {

        if ( parseInt(inhalt.offsetHeight)-doc_height+20 < -newPos ) {

            scrollStop();

            return true;

        }

    }



    inhalt.style.top = newPos + "px";

}



function setArrows(leftPadding, topPadding, visibility, ceol, s) {

    var inhalt = getElem("id", "inhalt", null);

    checkEOL   = ceol;

    speed      = s;

    doc_width  = getWindowInnerWidth();

    doc_height = getWindowInnerHeight();



    /* Handle resizes of the browser window */

//    window.onresize = setArrows;



    if ( visibility == "no" )

    	return true;

    if ( visibility == "auto" && (DOM || IE) ) {

        if ( parseInt(inhalt.offsetHeight) < doc_height )

            return true;

    }



    var obj0 = getElem("id", "arrowUp", null);

    obj0.style.top = topPadding + "px";

    obj0.style.left = (doc_width-leftPadding) + "px";

    obj0.style.visibility = "visible";



    var obj1 = getElem("id", "arrowDown", null);

    obj1.style.top = (doc_height-20) + "px";

    obj1.style.left = (doc_width-leftPadding) + "px";

    obj1.style.visibility = "visible";

}