function sidebarregiontabs(div, tabclick) {
	var option=['americasdiv','europediv', 'pacificdiv'];
	for(var i=0; i<option.length; i++) {
		if (document.getElementById(option[i])) {
			obj=document.getElementById(option[i]);
			obj.style.display=(option[i]==div)? "block" : "none";
		}
	}
	var tabop=['americas','europe', 'pacific'];
	for(var i=0; i<tabop.length; i++) {
		if (document.getElementById(tabop[i])) {
			obj=document.getElementById(tabop[i]);
			obj.style.display=(tabop[i]==tabclick)? "block" : "none";
		}
	}
}