//用得时候改参数

xxk('tab1','li','tablist1','div');
xxk('tab2','li','tablist2','div');
xxk('tab3','li','tablist3','div');
xxk('tab4','li','tablist4','div');
xxk('tab5','li','tablist5','div');
xxk('ul1','li','bigbox','div');

function xxk(box,list,box1,oDiv)
{
	var aLi=document.getElementById(box).getElementsByTagName(list)
	var aDiv=document.getElementById(box1).getElementsByTagName(oDiv);
	var i=0;
	for(i=0;i<aLi.length;i++)
	{
		aLi[i].index=i;	
		aLi[i].onmouseover=function()
		{
			for(i=0;i<aLi.length;i++)
			{
				aLi[i].className='';	
				aDiv[i].style.display='none';
				
			}
			this.className='active';
			aDiv[this.index].style.display='block'
		};
	};
}