var gIEVersion = "";	//浏览器名字
var gVersionNum = 0;	//浏览器版本号
function fCheck(){
	var bOk = false;
	var s = "";
	var fm = document.emaillogin;
	s = fm.style.value;
	
	fm.user.value = fTrim(fm.user.value); //Trim the input value.

	if( fm.user.value =="") {
		window.alert("\请输入您的用户名 ?");
		fm.user.focus();
		return false;
	}	

	if( fm.pass.value.length =="") {
		window.alert("\请输入您的密码 ?");
		fm.pass.focus();
		return false;
	}
	//var remUser = fm.remUser.checked?true:false;
	/*
	if( remUser){
		fm.autocomplete="on";
	}else{
		fm.autocomplete="off";
	}
	
	*/
	/*
	var secure = fm.secure;
	var url;
	if(secure.checked){
		url = "http://login.cmail.tom.com/cgi/login";
	}else{
		url = "http://login.cmail.tom.com/cgi/login";
	}
	url +="lightweight=1&";
	if( fm.secure.checked )
		url += "verifycookie=1&";
	fm.action = url + "language=0&style=" + s ;
	var ati = fm.user.value.indexOf( "@"); 
	if( ati != -1 )
		fm.user.value = fm.user.value.substring(0, ati);
	visitordata.setVals( [fm.user.value,fm.style.value,fm.secure.checked?1:0 ], remUser );
	visitordata.store();
	return true;
	*/
}

function fTrim(str)
{
	return str.replace(/(^\s*)|(\s*$)/g, ""); 
}


function fGetIEVersion()
{
	var IEAppName   = window.navigator.appName;						//得到当前浏览器的名.		
	var IEversion	= window.navigator.appVersion;					//得到当前浏览器的版本说明
	if(IEAppName.indexOf("Microsoft")<0){
		gIEVersion = IEAppName;
		return 0;
	}
	var isOpera = window.navigator.userAgent.indexOf("Opera") > -1;
	if(isOpera){
		gIEVersion = "Opera";
		return 0;
	}

	var k=IEversion.indexOf("MSIE");					//查找IE的版本号
	if(k>=0){
		k+=4;
		var j=IEversion.indexOf(";",k);
		if(j<0){
			j=IEversion.length-1;
		}	
		IEversion	=IEversion.substring(k,j)*1;				//得到IE的版本号，并且数字化
		gIEVersion = "MSIE: "+IEversion;
		if(IEversion >= 6){										//如果版本号6.0以上，		
			return 6;
		}else if( IEversion >= 5.5 && IEversion < 6 ){
			return 5.5;
		}else if( IEversion >= 5 && IEversion <5.5){
			return 5;
		}
		else{
			return 0;
		}
	}else{
		gIEVersion =  window.navigator.appVersion;
		return 0;
	}
}
gVersionNum = fGetIEVersion();