function checkInput(){
    var author = document.getElementById("author");
	var flink = document.getElementById("flink");
    var content = document.getElementById("content");

    var errormsg = "";

    if(author.value == ""){
		 errormsg = "* 用户不能为空\n";
		 author.focus();
    }
    
    if(author.value.length > 15){
		 errormsg = "* 用户不能超过15个字符\n";
		 author.focus();
    }
	
	if(flink.value.length > 100){
		 errormsg = "* 联系方式不能超过100个字符\n";
		 flink.focus();
    }
     
 //   alert(title +"&"+debate);

	if(content.value.match(/^\s*$/)){
	 errormsg = errormsg + "* 内容不能为空\n";
	 content.focus();
	}
    
	if(content.value.length > 1000){
	 errormsg = errormsg + "* 内容不能超过1000个字符\n";
	 content.focus();
	}
    
    if(errormsg){
    	alert(errormsg);
    	return false;
    }
    
}

function initimg(){
	$("seccode").src="/seccode.php";
}
function $(id){
	return document.getElementById(id);
}