var Xid = function(i){return document.getElementById(i);}

var switchDiv = function(o, n, p){
   var ol = Xid(o+p);
   var cl = Xid(o+n);
   ol.style.display="none";
   cl.style.display="";
}
var doClearStyle = function( num,tab,newStyle ){
	var li = Xid( tab ).getElementsByTagName( "li" );
	for( var i = 0; i < li.length; i++ ){
		if( ( num-1 ) == i ){
			li[i].className = newStyle;
		} else {
			li[i].className = "";
		}
	}
}
/**
*第一个标签切�?
*/
var m1 = 1;
function xtab_01( num ){  
   doClearStyle( num,"tab_01","xon" );
   
   switchDiv("tab01_cnt", num, m1);
   m1 = num;
   return false;
}
/**
*第二个标签切�?
*/
var m2 = 1;
function xtab_02( num ){  
   doClearStyle( num,"tab_02","xon" );
   
   switchDiv("tab02_cnt", num, m2);
   m2 = num;
   return false;
}