inp_c1=new Image(); inp_c1.src="/pic/checkbox.gif";
inp_c2=new Image(); inp_c2.src="/pic/checkbox_.gif";
function input_c(name, val_checked){
	obj=document.getElementById(name);
	html=obj.innerHTML;
	checked='<input type=hidden name=i_'+name+' value="'+val_checked+'">';
	if (html==''){
		obj.style.background='url(/pic/checkbox_.gif)';
		obj.innerHTML=checked;
		}else{
		obj.style.background='url(/pic/checkbox.gif)';
		obj.innerHTML='';
		}
	}