function textSize( size ) {
	if ( size == 'larger' ) {
		document.getElementById('body').className = 'larger';
	} else {
		document.getElementById('body').className = '';
	}
}

function show(id) {
	document.getElementById(id).style.display='block';
}
function hide(id) {
	document.getElementById(id).style.display='none';
}
function toggle(id) {
	if ( document.getElementById(id).style.display != 'block' ) {
		show(id);
	} else {
		hide(id);
	}
}

function changeProperty( objName, parentFrame, property, value ) {
	if ( parentFrame == "" ) { parentFrame = "document"; }
	if ( document.getElementById ) {
		obj = eval( parentFrame + ".getElementById( objName )" );
	}
	if ( obj != null ) {
		if ( value == true || value == false ) {
			eval( "obj." + property + "=" + value );
		}
		else {
			eval( "obj." + property + "='" + value +"'" );
		}
	}
}
function showLayer( arg ) {
	if ( arg != "" ) { changeProperty( arg, "", "style.visibility", "visible" ); }
}

function hideLayer( arg ) {
	if ( arg != "" ) { changeProperty( arg, "", "style.visibility", "hidden" );	}
}

function showArray( args ) {
	var i,args;
	if ( args != "" ) {
		for ( i = 0; i < (args.length); i++ ) {
			changeProperty( args[i], "", "style.visibility", "visible" );
		}
	}
}
	
function hideArray( args ) {
	var i,args;
	if ( args != "" ) {
		for ( i = 0; i < (args.length); i++ ) {
			changeProperty( args[i], "", "style.visibility", "hidden" );
		}
	}
}