function tabSwop( intWhich ) {
	// hide all tabs, reset link classes
	for (i=0;i<5;i++) {
		$('content'+i).style.display = "none";
		$('link'+i).className = ('tab'+i);
		$('link'+i).style.fontWeight = "normal";
	}
	// show current tab, change current className
	$('content'+intWhich).style.display = "block";
	$('link'+intWhich).className = ('tabselected'+intWhich);
	$('link'+intWhich).style.fontWeight = "bold";
}