function sw1(id){
		  if(id==1){
		    document.getElementById('sw1_1').className="bq02";
		    document.getElementById('sw1_2').className="bq01";
		    document.getElementById('sw1_3').className="bq01";
			document.getElementById('sw1_4').className="bq01";
			document.getElementById('sw1_1c').style.display="block";
			document.getElementById('sw1_2c').style.display="none";
			document.getElementById('sw1_3c').style.display="none";
			document.getElementById('sw1_4c').style.display="none";
			}
		  else if(id==2){
		    document.getElementById('sw1_1').className="bq01";
		    document.getElementById('sw1_2').className="bq02";
		    document.getElementById('sw1_3').className="bq01";
			document.getElementById('sw1_4').className="bq01";
			document.getElementById('sw1_1c').style.display="none";
			document.getElementById('sw1_2c').style.display="block";
			document.getElementById('sw1_3c').style.display="none";
			document.getElementById('sw1_4c').style.display="none";
		  }
		  else if(id==3){
		    document.getElementById('sw1_1').className="bq01";
		    document.getElementById('sw1_2').className="bq01";
		    document.getElementById('sw1_3').className="bq02";
			document.getElementById('sw1_4').className="bq01";
			document.getElementById('sw1_1c').style.display="none";
			document.getElementById('sw1_2c').style.display="none";
			document.getElementById('sw1_3c').style.display="block";
			document.getElementById('sw1_4c').style.display="none";
		  }
		  else if(id==4){
		    document.getElementById('sw1_1').className="bq01";
		    document.getElementById('sw1_2').className="bq01";
		    document.getElementById('sw1_3').className="bq01";
			document.getElementById('sw1_4').className="bq02";
			document.getElementById('sw1_1c').style.display="none";
			document.getElementById('sw1_2c').style.display="none";
			document.getElementById('sw1_3c').style.display="none";
			document.getElementById('sw1_4c').style.display="block";
		  }
		  }


		  function sw2(id){
		  if(id==1){
		    document.getElementById('sw2_1').className="bq02a";
		    document.getElementById('sw2_2').className="bq01a";
		    document.getElementById('sw2_3').className="bq01a";
			document.getElementById('sw2_4').className="bq01a";
			document.getElementById('sw2_1c').style.display="block";
			document.getElementById('sw2_2c').style.display="none";
			document.getElementById('sw2_3c').style.display="none";
			document.getElementById('sw2_4c').style.display="none";
			}
		  else if(id==2){
		    document.getElementById('sw2_1').className="bq01a";
		    document.getElementById('sw2_2').className="bq02a";
		    document.getElementById('sw2_3').className="bq01a";
			document.getElementById('sw2_4').className="bq01a";
			document.getElementById('sw2_1c').style.display="none";
			document.getElementById('sw2_2c').style.display="block";
			document.getElementById('sw2_3c').style.display="none";
			document.getElementById('sw2_4c').style.display="none";
		  }
		  else if(id==3){
		    document.getElementById('sw2_1').className="bq01a";
		    document.getElementById('sw2_2').className="bq01a";
		    document.getElementById('sw2_3').className="bq02a";
			document.getElementById('sw2_4').className="bq01a";
			document.getElementById('sw2_1c').style.display="none";
			document.getElementById('sw2_2c').style.display="none";
			document.getElementById('sw2_3c').style.display="block";
			document.getElementById('sw2_4c').style.display="none";
		  }
		  else if(id==4){
		    document.getElementById('sw2_1').className="bq01a";
		    document.getElementById('sw2_2').className="bq01a";
		    document.getElementById('sw2_3').className="bq01a";
			document.getElementById('sw2_4').className="bq02a";
			document.getElementById('sw2_1c').style.display="none";
			document.getElementById('sw2_2c').style.display="none";
			document.getElementById('sw2_3c').style.display="none";
			document.getElementById('sw2_4c').style.display="block";
		  }  
		  }


var m = 3; //定义tab总数
var speed = 2000; //定义自动变换的速度，单位:秒
var interval;
var nn = 1;
interval = setInterval("chg()",speed);
function init(){
interval = setInterval("chg()",speed);
}
function chg(){
if(nn>3) nn = 1;
chgtab(nn);
nn++;
}

function chgtab(obj){
var n = obj;
for(i=1;i<m+1;i++){
document.getElementById("tab"+i+"").className='tab_normal';
document.getElementById("tz_content"+i+"").style.display='none';
}
document.getElementById("tab"+n+"").className='tab_selected';
document.getElementById("tz_content"+n+"").style.display='block';
if(n==1){document.getElementById("tz_moveicon");}
else if(n==2){document.getElementById("tz_moveicon");}
else if(n==3){document.getElementById("tz_moveicon");}
else {document.getElementById("tz_moveicon");}
}