var transport = 'ziczac';
function active(tab){
	if(tab=="ziczac_chat_right"){
		document.getElementById("ziczac_chat_right").style.display='block';
		document.getElementById("ac_ziczac").className='ziczac_none';
		document.getElementById("ziczac01").style.display='block';
		transport = 'ziczac';
	}
	else
	{
		document.getElementById("ziczac_chat_right").style.display='none';
		document.getElementById("ac_ziczac").className='ziczac';
		document.getElementById("ziczac01").style.display='none';
	}
	if(tab=="yahoo_chat_right"){
		document.getElementById("yahoo_chat_right").style.display='block';
		document.getElementById("ac_yahoo").className='yahoo_none';
		document.getElementById("yahoo01").style.display='block';
		transport = 'yahoo';
	}
	else
	{
		document.getElementById("yahoo_chat_right").style.display='none';		
		document.getElementById("ac_yahoo").className='yahoo';
		document.getElementById("yahoo01").style.display='none';
	}
	if(tab=="msn_chat_right"){
		document.getElementById("msn_chat_right").style.display='block';		
		document.getElementById("ac_msn").className='msn_none';
		document.getElementById("msn01").style.display='block';
		transport = 'msn';
	}
	else
	{
		document.getElementById("msn_chat_right").style.display='none';
		document.getElementById("ac_msn").className='msn';
		document.getElementById("msn01").style.display='none';
	}
	if(tab=="aim_chat_right"){
		document.getElementById("aim_chat_right").style.display='block';
		document.getElementById("ac_aim").className='aim_none';
		document.getElementById("aim01").style.display='block';
		transport = 'aim';
	}
	else
	{
		document.getElementById("aim_chat_right").style.display='none';
		document.getElementById("ac_aim").className='aim';
		document.getElementById("aim01").style.display='none';
	}
	if(tab=="talk_chat_right"){
		document.getElementById("talk_chat_right").style.display='block';
		document.getElementById("ac_talk").className='talk_none';
		document.getElementById("talk01").style.display='block';
		transport = 'gtalk';
	}
	else
	{
		document.getElementById("talk_chat_right").style.display='none';
		document.getElementById("ac_talk").className='talk';
		document.getElementById("talk01").style.display='none';
	}
}