function serviceCg(num){	
	document.getElementById("text"+num).style.backgroundImage='url(images/service_bg2_1.gif)';
	document.getElementById("bg"+num).style.backgroundImage='url(images/service_bg3_1.gif)';
}
function serviceCgb(num){	
	document.getElementById("text"+num).style.backgroundImage='url(images/service_bg2.gif)';
	document.getElementById("bg"+num).style.backgroundImage='url(images/service_bg3.gif)';
}


var ns = (navigator.appName.indexOf("Netscape") != -1);
var autobannerId=0;
var t;
nereidFadeObjects = new Object();
nereidFadeTimers = new Object();

function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;
    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}


function MozOp(object){
	
	
	object.style.MozOpacity = 1;

	}

function chgBanner(bannerId){
	for(i=1;i<4;i++){
		if (ns)
			document.getElementById("bannerTxt"+bannerId).style.MozOpacity=0.1;
		else
			document.getElementById("bannerTxt"+bannerId).filters.alpha.opacity=10;
		document.getElementById("bannerTxt"+i).style.display='none';
		document.getElementById("bannerImg"+i).className='';
	}
	
	document.getElementById("bannerTxt"+bannerId).style.display='';
	document.getElementById("bannerImg"+bannerId).className='hover';
	if (ns)
		MozOp(document.getElementById("bannerTxt"+bannerId));	
	else
		nereidFade(document.getElementById("bannerTxt"+bannerId),100,3,5);	
	
}

function chkBanner(bannerId){
	chgBanner(bannerId)
	autobannerId=bannerId;
	clearTimeout(t);
	t=window.setTimeout("autoChgBanner()",5000);
}



function autoChgBanner(){
	if (autobannerId>2)
		autobannerId=1;
	else
		autobannerId=autobannerId+1;
	chgBanner(autobannerId);
	t=window.setTimeout("autoChgBanner()",5000)
	
}
window.onload = function(){   
        autoChgBanner()  
    }  

document.getElementById("qqonline").innerHTML="<a href='http://wpa.qq.com/msgrd?V=1&Uin=187398695&Site=ttkc&Menu=yes' target='_blank'><img border='0' src='/images/qq.gif'></a> 　 <a href='http://wpa.qq.com/msgrd?V=1&Uin=171609339&Site=ttkc&Menu=yes' target='_blank'><img border='0' src='http://wpa.qq.com/pa?p=1:171609339:7'></a>";