var ourInterval;
var opacInterval;
var opac = 5;
var opacoff=5;
var scrollSpeed = 20;
var scrollHeight = 5;
var scrollWith = 5;
var scrollHight = 5;
var opacSpeed=20;
var obj="";
var incr=0;

function scrollStart(direction, divID, elementID){
	obj=elementID;	
	startOpacity(obj);
	ourInterval = setInterval("scroll"+direction+"('"+divID+"')", scrollSpeed);
}
function scrollEnd(which){
	incr=0;
	resetOpacity(obj);	
	clearInterval(opacInterval);
	clearInterval(ourInterval);	
} 
function scrollLeft(which){
	document.getElementById(which).scrollLeft = document.getElementById(which).scrollLeft - (scrollWith+incr);	
	incr+=0.1;
}
function scrollRight(which){
	document.getElementById(which).scrollLeft = document.getElementById(which).scrollLeft + (scrollWith+incr);
	incr+=0.1;
} 
function scrollUp(which){
	document.getElementById(which).scrollHight = document.getElementById(which).scrollHight + (scrollHight+incr);
	incr+=0.1;
} 
function scrollDown(which){
	document.getElementById(which).scrollHight = document.getElementById(which).scrollHight - (scrollHight+incr);
	incr+=0.1;
} 



function startOpacity(id){
	opacInterval= setInterval("setOpacity('"+id+"')", opacSpeed);
}

function setOpacity(id) { 	
	if(opac<=10){
		document.getElementById(id).style.opacity = opac/10; 
		document.getElementById(id).style.filter = 'alpha(opacity=' + opac*10 + ')'; 	
		opac++;
	}
} 
function resetOpacity(id){
		document.getElementById(id).style.opacity = opacoff/10; 
		document.getElementById(id).style.filter = 'alpha(opacity=' + opacoff*10 + ')'; 	
		opac=5;
}