current=0;
function secBoard(n)
{
	for(i=1;i<3;i++){
	eval("document.getElementById('cel"+i+"').className='huanno'");
	}
	eval("document.getElementById('cel"+n+"').className='huannow'");
	current=n;
	for(i=1;i<3;i++)
	eval("yxmr1"+i+".style.display='none'");
	eval("yxmr1"+n+".style.display='block'");
	}
	
function changebg(n){
	for(i=1;i<5;i++){
		eval("document.getElementById('cel"+i+"').className='son00'");
		}
	if (current!=n){
		eval("document.getElementById('cel"+n+"').className='son0"+n+"'");
		
		}
	}
function resetbg(obj,n){
	if (current!=n){
		eval("obj.className='so00'");
		}
	}