function show_scope_bookmark (text_name, bookmark_name){
	document.getElementById('scope_1').className  = 'scopebutton';
	document.getElementById('scope_2').className  = 'scopebutton';
	document.getElementById('scope_3').className  = 'scopebutton';	
	document.getElementById(bookmark_name).className  = 'scopebutton_selected';
	document.getElementById('scope_data_1').style.display = 'none';
	document.getElementById('scope_data_2').style.display = 'none';
	document.getElementById('scope_data_3').style.display = 'none';		
	document.getElementById(text_name).style.display = '';
}