var introduction_num = 1;

function MakeIntroduction(intro_num){
	HideIntroduction(introduction_num);
	ShowIntroduction(intro_num);
	
	introduction_num = intro_num;	
}

function HideIntroduction(intro_num){
	intro_menu = GetObj('intro_m_' + intro_num);
	intro_body = GetObj('intro_b_' + intro_num);
	intro_a = GetObj('intro_a_' + intro_num);
	
	intro_menu.style.backgroundImage = 'url(/templates/www/spbtraveller/images/intro_bg.gif)';
	intro_body.style.display = 'none';
	
	intro_a.style.color = '#616970';
}

function ShowIntroduction(intro_num){
	intro_menu = GetObj('intro_m_' + intro_num);
	intro_body = GetObj('intro_b_' + intro_num);
	intro_a = GetObj('intro_a_' + intro_num);
	
	intro_menu.style.backgroundImage = 'url(/templates/www/spbtraveller/images/intro_bg_selected.gif)';
	intro_body.style.display = '';
	
	intro_a.style.color = '#ffffff';
}