function form_check(form){
var a = document.getElementsByTagName("input");
	for(var i=0; i<a.length; i++){
	var tmpStr;
	tmpStr = a[i].name;

		if(a[i].type=="radio" && eval("document.form1."+tmpStr+"[0].checked") == false && eval("document.form1."+tmpStr+"[1].checked") == false && eval("document.form1."+tmpStr+"[2].checked") == false && eval("document.form1."+tmpStr+"[3].checked") == false){ 
				var quesN;
				quesN = tmpStr.slice(1);
				alert("你还没回答第"+quesN+"题，请全部做好再提交。");
				return false;
		}
	}
}