var flagup,flagdw,scrollspeed;
flagup=0;
flagdw=0;  
scrollspeed=40;

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function scup() {
	if (flagup==0) scrolldown();
}
function scdw() {
	if (flagdw==0) scrollup();
}

function scrolldown() {
	if(window.scrolltimerup){
		clearTimeout(scrolltimerup)
	}
	if(iens6&&parseInt(contentobj.style.top)>=(contentheight*(-1)+10)){
		contentobj.style.top=parseInt(contentobj.style.top)-step
	}else if(ns4&&contentobj.top>=(contentheight*(-1)+10)){
		contentobj.top-=step
	}
	else{
		shifttotop();
	}
	scrolltimerdown = setTimeout("scrolldown()",scrollspeed)
	flagup=1;
	flagdw=0;
	//MM_swapImage('u','','media/upr.jpg',1);
}

function scrollup() {
	if(window.scrolltimerdown){
		clearTimeout(scrolltimerdown)
	}
	if(iens6&&parseInt(contentobj.style.top)<=contentheight-10){
		contentobj.style.top=parseInt(contentobj.style.top)+step
	}else if(ns4&&contentobj.top<=contentheight-10){ 
		contentobj.top+=step
	}
	else{
		shifttobottom();
	}
	
	scrolltimerup = setTimeout("scrollup()",scrollspeed)
	flagup=0;
	flagdw=1;
	
}

function stopall() {
	if(window.scrolltimerup){
		clearTimeout(scrolltimerup)
	}
	if(window.scrolltimerdown){
		clearTimeout(scrolltimerdown)
	}
	flagup=0;
	flagdw=0;
}

function shifttotop(){
	stopall()
	if (iens6) {
		contentobj.style.top=contentheight-10 //0
	}else{
		contentobj.top=contentheight-10 //0
	}
}


function shifttobottom(){
	stopall()
	if (iens6) {
		contentobj.style.top=contentheight*(-1)+10
	}else{
		contentobj.top=contentheight*(-1)+10
	}
}


function getcontent_height(){
	if (iens6)
	contentheight=contentobj.offsetHeight
}
window.onload=getcontent_height
//window.onload=scup()
MM_preloadImages('media/upr.jpg','media/str.jpg','media/dwr.jpg')
//scup() ;