// JavaScript Document


function scrollDivDown(id){
defaultStep=5  
step=defaultStep  
clearTimeout(timerDown)  
document.getElementById(id).scrollTop+=step  
timerDown=setTimeout("scrollDivDown('"+id+"')",10) 

}  

function scrollDivUp(id){ 
defaultStep=5  
step=defaultStep  
clearTimeout(timerUp) 
document.getElementById(id).scrollTop-=step  
timerUp=setTimeout("scrollDivUp('"+id+"')",10) 
}  

function scrollDivDownByWheel(id){ 
defaultStep=2  
step=defaultStep  
clearTimeout(timerDown)  
document.getElementById(id).scrollTop+=step  
timerDown=setTimeout("scrollDivDown('"+id+"')",0) 

}  

function scrollDivUpByWheel(id){ 
defaultStep=2  
step=defaultStep  
clearTimeout(timerUp) 
document.getElementById(id).scrollTop-=step  
timerUp=setTimeout("scrollDivUp('"+id+"')",0) 
}  

timerDown=""  
timerUp=""  

function stopMe(){ 
clearTimeout(timerDown)  
clearTimeout(timerUp) 
} 

document.onmousemove=function(){stopMe()}  



// Scroll Wheel Code

function handle(delta) {
	if (delta < 0) scrollDivDownByWheel('gallery_space')
	else
		scrollDivUpByWheel('gallery_space')
}

function wheel(event){
	var delta = 0;
	if (!event) event = window.event;
	if (event.wheelDelta) {
		delta = event.wheelDelta/120; 
		if (window.opera) delta = -delta;
	} else if (event.detail) {
		delta = -event.detail/3;
	}
	if (delta)
		handle(delta);
        if (event.preventDefault)
                event.preventDefault();
        event.returnValue = false;
}

/* Initialization code. */
if (window.addEventListener)
	window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;