var ii = 1;
function img_tag_4(id)
{
	for(var i =0;i<4;i++)
	{
		if(i==id){
			document.getElementById('img_big').src=list_img[i];
			var obj_a = document.getElementById('img_big').parentNode;
			obj_a.href=list_a[i];
			document.getElementById('a_content').href=list_a[i];
			document.getElementById('a_content').innerHTML=list_a_t[i];
			}
			document.getElementById('pic'+i).className='right0';
			document.getElementById('top_bg'+i).className='left0';
	}
	
	document.getElementById('pic'+id).className='right00';
	document.getElementById('top_bg'+id).className='left00';
}

function img_tag_4_time(id)
{
	for(var i =0;i<4;i++)
	{
		if(i==id){
			document.getElementById('img_big').src=list_img[i];
			var obj_a = document.getElementById('img_big').parentNode;
			obj_a.href=list_a[i];
			document.getElementById('a_content').href=list_a[i];
			document.getElementById('a_content').innerHTML=list_a_t[i];
			}
			document.getElementById('pic'+i).className='right0';
			document.getElementById('top_bg'+i).className='left0';
	}
	
	document.getElementById('pic'+id).className='right00';
	document.getElementById('top_bg'+id).className='left00';
	
	if(ii>3)
	{
		ii=0;
	}
	setTimeout('img_tag_4_time('+ii+')',4000);
	ii++;
}