function ReverseContentDisplay(d,x) {
	if(d.length < 1) { return; }
		if(document.getElementById(d).style.display == "none") { 
			document.getElementById(d).style.display = "block"; 
		    document.getElementById(x).style.backgroundPosition = "0 0"
			}
	else { document.getElementById(d).style.display = "none"; 
			document.getElementById(x).style.backgroundPosition = "0 -50px"
	}
}