function pr_content_right_flush( ) {
	var div_boxes = document.getElementById( 'pr-content-right' );
	var div_box_count = parseInt( div_boxes.childNodes.length, 10 );
	for( var i = 0; i < div_box_count; i++ ) {
		if( div_boxes.childNodes[i].style ) div_boxes.childNodes[i].style.display = 'none';
	}
}
function pr_content_right_place( element ) {
	var div_target = document.getElementById( 'pr-content-right' );
	div_target.style.display = 'block';
	div_target.replaceChild( element, div_target.firstChild );
}