var _t1 = 0; 
var _t2 = 5; 
var _tnum = 10; 
var _tn = 1;
var _tl =1;
_tt1 = setTimeout('change_img()',_t1*0);
function change_img(){
setFocus(_tn);
}
function setFocus(i){
if(i>_tnum){_tn=1;i=1;}
_tl?document.getElementById('focusPic'+_tl).style.display='none':'';
document.getElementById('focusPic'+i).style.display='block';
_tl=i;
_tn++;
}