function rollMe(whichOne) {
	if(whichOne == "home") document.getElementById('home').style.backgroundPosition= "-184px 0px";
	if(whichOne == "who") document.getElementById('who').style.backgroundPosition= "-184px -0px";	
	if(whichOne == "we_do") document.getElementById('we_do').style.backgroundPosition= "-184px -0px";	
	if(whichOne == "can_do") document.getElementById('can_do').style.backgroundPosition= "-184px -0px";
	if(whichOne == "materials") document.getElementById('materials').style.backgroundPosition= "-184px -0px";	
	if(whichOne == "dear_shanti") document.getElementById('dear_shanti').style.backgroundPosition= "-184px -0px";	
	if(whichOne == "contact_us") document.getElementById('contact_us').style.backgroundPosition= "-184px -0px";	
}

function rolloff(whichOne) {
	if(whichOne != "home") document.getElementById('home').style.backgroundPosition= "0px 0px";
	if(whichOne != "who") document.getElementById('who').style.backgroundPosition= "0px 0px";	
	if(whichOne != "we_do") document.getElementById('we_do').style.backgroundPosition= "0px 0px";	
	if(whichOne != "can_do") document.getElementById('can_do').style.backgroundPosition= "0px 0px";
	if(whichOne != "materials") document.getElementById('materials').style.backgroundPosition= "0px 0px";	
	if(whichOne != "dear_shanti") document.getElementById('dear_shanti').style.backgroundPosition= "0px 0px";
	if(whichOne != "contact_us") document.getElementById('contact_us').style.backgroundPosition= "0px 0px";
}