var changespeed = 3; 
var stoponhover = 1;  
  function easytabs(menunr, active) { 
 	 currenttab=active;  
	if (stoponhover==1)  {
		 stop_autochange()
	} else  {
	   counter=1; 
	}  
		for (i=1; i <= 3; i++){
			document.getElementById("rm_link"+i).className='tab'+i;
			document.getElementById("rm_content"+i).style.display = 'none';
		}
		 document.getElementById("rm_link"+active).className='tab'+active+' tabactive';
		 document.getElementById("rm_content"+active).style.display = 'block';
  }
	
	var timer; counter=0;  
	var currenttab=1; 
	
	function start_autochange(){
			counter=counter+1;
			timer=setTimeout("start_autochange()",1000);
			if (counter == changespeed+1) {
				currenttab++;
				if (currenttab>3) {
					currenttab=1
				}
				easytabs(1,currenttab);
				restart_autochange();
			}
	}
	
	function restart_autochange(){
 
		clearTimeout(timer);
		counter=0;start_autochange();
	}
	
	function stop_autochange(){
			clearTimeout(timer);
			counter=0;
	}

//window.onload=function(){
function rm_auto(){ 
  var a = 1; var b = 1; 
  do {
    easytabs(b, a);  
	a++; b++;
	}
	while (b<=3);
 start_autochange();
}
//新加入的函数
var isIE = (document.all && window.ActiveXObject && !window.opera) ? true : false;  
 
if(isIE)  
{  
 window.attachEvent("onload", rm_auto);  
}  else  {   
 window.addEventListener("load", rm_auto, false);  
}