var timeout2=5000;  //切换时间
var timeout3=8000; //mouse over 后切换时间
var now_content=0;
var total_content=8;
var way=1;
var start_content=Math.round(Math.random()*(total_content-1))+1; //除广告为第一显示外
function content_mouse(num){
	now_content=num;
	window.clearInterval(theTimer2);   
	for (var i=1;i<=total_content;i++){
		document.getElementById('divhl0'+i).style.display='none';
		document.getElementById('cd'+i).style.backgroundColor='#FFFF99'; 
	}
	document.getElementById('divhl0'+num).style.display='block';
	document.getElementById('cd'+num).style.backgroundColor='#CCFFFF';
	theTimer2=setTimeout('change_content()', timeout3);
}
function change_content(){
	for (var i=1;i<=total_content;i++){
		document.getElementById('divhl0'+i).style.display='none';
		document.getElementById('cd'+i).style.backgroundColor='#FFFF99';	  
	}
	document.getElementById('divhl0'+now_content).style.display='block';
	document.getElementById('cd'+now_content).style.backgroundColor='#CCFFFF';		  
	if (way){
		now_content++;
		}
	else{
		now_content--;
		}
	if(now_content>total_content){
			now_content=total_content-1;
			way=0;
		}else if(now_content==0){
			now_content=1;
			way=1;
			}
	theTimer2=setTimeout('change_content()', timeout2);
}
theTimer2=setTimeout(function(){now_content=1;change_content();}, timeout2);