function switchTab(id)
{
	$('major_content').style.display = "none";
	$('trans_content').style.display = "none";
	$('all_content').style.display = "none";
	$('team_content').style.display = "none";
	$('available_content').style.display = "none";
	
	$('major_tab').className = "tab_default";
	$('trans_tab').className = "tab_default last";
	$('all_tab').className= "tab_default";
	$('team_tab').className = "tab_default";
	$('available_tab').className = "tab_default";
	
	$(id+'_tab').className = "tab_selected";
	$(id+'_content').style.display = "block";
	
	if(id == "trans"){$('trans_tab').className = "tab_selected last";}
}