String.prototype.trim = function()
{return this.replace(/(^\s*)|(\s*$)/g, "");
}
function clearHTML(str){
html = str.replace(/\<[^>]*>/g,"");
return html;
}

	function feedbackup(){//反馈
	var url="feedbackok.asp"
	var feedback_type=$F("feedback_type").trim();
	var contact=$F("contact").trim();
  var title=$F("title").trim();
  var sex=get_checkbox("sex").trim();
  var unit=$F("unit").trim();
  var addr=$F("addr").trim();
	var phone=$F("phone").trim();
	var email=$F("email").trim();
	var content=$F("content").trim();
	content=clearHTML(content)
	content=content.replace("\n","<br>")
	content=content.replace("\n\r","<br>")
	content=content.replace("\r\n","<br>")
	  if(contact==""){
		alert("必须填写姓名！")
		return false
		}
	  if(title==""){
		alert("必须填写主题！")
		return false
		}
			if(phone==""){
		alert("请输入联系电话")
		return false
		}
			if(email==""){
		alert("请输入邮箱")
		return false
		}
		$("feedbackokshow").innerHTML='<div align="center"><img src="img/loading.gif">正在提交信息,请稍候...</div>'
	var pars = "feedback_type="+feedback_type+"&content="+content+"&contact="+contact+"&phone="+phone+"&email="+email+"&addr="+addr+"&unit="+unit+"&sex="+sex+"&title="+title;

	var myAjax = new Ajax.Updater(
'feedbackokshow',
url,
{
method: 'post',
parameters: pars
});
	}	

function get_checkbox(ids){
			var types=document.getElementsByName(ids);
		var ts="";
		for(var i=0;i<types.length;i++){
			if(types[i].checked==true){
			ts=types[i].value;
		}
			}
	return ts
	}