var curDiv = null;
function ShowContent(show){
	var obj;
	if(curDiv != null ) HideContent(curDiv);
	
	obj=document.getElementById(show);
	
	if( obj != undefined ){
		obj.style.visibility = "visible";
		curDiv = show;
	}
}

function HideContent(hide){
	document.getElementById(hide).style.visibility = "hidden";
}