function checkEmail(email)
{
  var reg = /^([a-zA-Z0-9_-])+.*@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/;
  return (email.match(reg));
}

function isNumber(variable)
{
  var reg = /^\d+$/;
  return (reg.test(variable));
}

function cleanVisitHistory(url,f)
{	
	jQuery.post(
	url, 
	  function(data){
	  	document.getElementById(f).innerHTML="" ;
	}
	);	
}

function errormsg(jq,str){
		//jq.removeClass(); 
		//jq.addClass("errormsg"); 
		jq.text(str);
}
function wellmsg(jq,str){
		//jq.removeClass(); 
		//jq.addClass("wellmsg"); 
		jq.text(str);		
}
function warningmsg(jq,str){
		//jq.removeClass(); 
		//jq.addClass("errormsg"); 
		jq.text(str);
}		
function getUrl(url,div,dataType1){
	var dataType,async,b ;
	async =true;
	//dataType = "html";
	if (arguments.length == 3) {
		dataType=dataType1;
		async =false;
	}
	else{
		 	 
	}
	jQuery.ajax({
	type: "GET",
	async: async,
	dataType: dataType,
	url: url,
	success: function(msg){
		if (dataType != "json") {
			document.getElementById(div).innerHTML = msg;
			b= 1;
		}	
		else{
			
			b= msg.flag;
			if(b){
				wellmsg(jQuery("#"+div),msg.info);	
			}
			else{
				errormsg(jQuery("#"+div),msg.info);
			}			
		} 
   },
	error: function(msg){
	   if(dataType=="html"){
			document.getElementById(div).innerHTML="AJAX请求错误" ;			
	   }
	   else{
	   		errormsg(jQuery("#"+div),"AJAX请求错误");
	   }
	   b= 0;
	}
	});
	return b;
}

function checkEmail_(email){
 return /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i.test(email);
}