function CheckEmail(e)
{
    if(Trim(e.value)=="")
    {
        document.getElementById("CheckItem").innerHTML = "<font color='red' size='2'>邮箱不能为空</font>";
        return;
    }
    document.getElementById("CheckItem").innerHTML = "";
    UserManage.CheckUser(e.value,Check);
}
function Check(CheckMail)
{   
    if(CheckMail==0)
    {
        document.getElementById("CheckItem").innerHTML = "<font color='green' size='2'>此邮箱可以使用</font>";
    }
    else
    {
        document.getElementById("CheckItem").innerHTML = "<font color='red' size='2'>此邮箱已被其他用户注册</font>";
    }
}

// 去掉空格
function Trim(sheep)
{
	if(sheep.length==0)
	{
		return sheep;
	}
		
	var front=0,end=sheep.length-1;
				
	while((sheep.charAt(front)==" "||sheep.charCodeAt(front)==160) && front<sheep.length)
	{
		front++;
	}
		
	while((sheep.charAt(end)==" "||sheep.charCodeAt(front)==160) && end>=0)
	{
		end--;
	}
		
	sheep=sheep.substr(front,end-front+1);
		
	return sheep;
}