String.prototype.trim = function(){ return this.replace(/(^\s*)|(\s*$)/g, ""); } 
var WGP = new Object();
var form_submitted = false;

WGP.Common = {

	/**
	 * 加载器,用于动态加载文件
	 */
    Loader: function() {
		this.loadJS = function(url) {
			var el = document.createElement('script');
			el.src = url + '&p=' + Math.random();
			el.type = 'text/javascript';
			var he = $$('head')[0];
			he.appendChild(el);
		};
	}
}

/*------------------------------------ index -------------------------------------*/
function keyPress(e){
	e = window.event  ? event : e;
	if(e.keyCode==13){
		login();
	}
}

function login(){
		var uid = $("login_uid").value.trim();
		if( uid=='' ){
			alert('帐号不能为空');
			$("login_uid").focus();
			return;
		}
		var pwd = $("login_pwd").value.trim();
		if( pwd=='' ){
			alert('密码不能为空');
			$("login_pwd").focus();
			return;
		}
		WGP.Swd.submit();
}

function submit_form()
{
  if(form_submitted)
  {
    alert ( "请不要多次提交!" );
    return false;
  }else{
    form_submitted = true;
    return true;
  }
}