// JavaScript Document

// Home page scroll functionality

var speed=2;
var scroller;
var crossobj;
var contentheight;

function initialize_scroll(){
window.onload=getcontent_height;
scroller=document.getElementById('scroll');
if (scroller){
crossobj=document.getElementById("scroll_content");
contentheight=crossobj.offsetHeight
}
}

function movedown(){
if (window.moveupvar) clearTimeout(moveupvar)
if (scroller&&parseInt(crossobj.style.top)>=(contentheight*(-1)+100)){
crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
}
movedownvar=setTimeout("movedown()",20)
}

function moveup(){
if (window.movedownvar) clearTimeout(movedownvar)
if (scroller&&parseInt(crossobj.style.top)<=0)
crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
moveupvar=setTimeout("moveup()",20)
}

function stopscroll(){
if (window.moveupvar) clearTimeout(moveupvar)
if (window.movedownvar) clearTimeout(movedownvar)
}

function movetop(){
stopscroll()
if (scroller)
crossobj.style.top=0+"px"
}

function getcontent_height(){
if (scroller)
contentheight=crossobj.offsetHeight
}