// FAQ
function change_div(idx, sum_cnt){
	var d_name = 'oContent_idx'+idx;
	var div_idx = eval('document.all.'+d_name+'.style.display');
	if(div_idx == "none"){
		for(i=0;i<sum_cnt;i++){
			eval("document.all.oContent_idx"+i+".style.display='none'");
		}
		eval("document.all."+d_name+".style.display=''");
	}else{
		eval("document.all."+d_name+".style.display='none'");
	}
}