var xmlHttp; 
function createXMLHttpRequest() 
{ 
	if (window.ActiveXObject) 
	{ 
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 
	} 
	else if (window.XMLHttpRequest) 
	{ 
		xmlHttp = new XMLHttpRequest; 
	} 
} 



function checkuser()
	{
		createXMLHttpRequest(); 
		var ThisspanName;
		xmlHttp.onreadystatechange = function() 
		{
			if (xmlHttp.readyState == 4 && xmlHttp.status == 200) 
			{ 
				ThisspanName = unescape(xmlHttp.responseText);
				ThisspanName = ThisspanName.replace("<script type=\"text/javascript\" src=\"Inc/checkform.js\"></script>","");
				//alert(ThisspanName=="0");
				if(ThisspanName=="0")
				{
					document.getElementById('CheckUserTip').innerHTML="此用户名可用"
				}else
				{
					if (ThisspanName=="")
					{
						document.getElementById('CheckUserTip').innerHTML="用户名不能为空";
						
					}else
					{
						document.getElementById('CheckUserTip').innerHTML="此用户名已存在";
						
					}
				}
				
				
			} 
		}; 
//读数据

		var username=document.getElementById('UserName').value
		var url = "read.asp?username="+username ;
		xmlHttp.open("GET",url,true); 
		xmlHttp.send(null); 
		return unescape(ThisspanName);

	}


//验证密码强度
        function isSecurity(v){
                if (v.length < 3){iss.reset();return;}
                var lv = -1;
                if (v.match(/[a-z]/ig)){lv++;}
                if (v.match(/[0-9]/ig)){lv++;}
                if (v.match(/(.[^a-z0-9])/ig)){lv++;}
                if (v.length < 6 && lv > 0){lv--;}
                iss.reset();
                switch(lv)
                {                                
                        case 0:
                                iss.level0();
                                break;
                        case 1:
                                iss.level1();
                                break;
                        case 2:
                                iss.level2();
                                break;
                        default:
                                iss.reset();
                }
        }
        var iss = {
                color:["CC0000","FFCC33","66CC00","CCCCCC"],
                text:["弱","中","强"],
    width:["40","60","80","20"],
                reset:function(){
                        $("B").style.backgroundColor = iss.color[3];
      $("B").style.width = iss.width[3];
                        $("pwdtip").innerHTML = "弱";

                },
                level0:function(){
                        $("B").style.backgroundColor = iss.color[0];
      $("B").style.width = iss.width[0];
      $("pwdtip").innerHTML = "较弱"; 
                },
                level1:function(){
                        $("B").style.backgroundColor = iss.color[1];
      $("B").style.width = iss.width[1];
                        $("pwdtip").innerHTML = "中";                        
                },
                level2:function(){
                        $("B").style.backgroundColor = iss.color[2];
      $("B").style.width = iss.width[2];
                        $("pwdtip").innerHTML = "强";
                        
                }
        }
        var $ = function(v){return document.getElementById(v);}

//id1--原密码框id
//id2--重复密码框id
//tip2--重复密码框提示
function checkrepassword(id1,id2,tip2)
{
	//alert(document.getElementById(id1).value);
//	alert(document.getElementById(id2).value);
//	alert(document.getElementById(id1).value==document.getElementById(id2).value)
		if(document.getElementById(id1).value==document.getElementById(id2).value)
		{
			document.getElementById(tip2).innerHTML="两次输入密码一致!"	
		}else
		{
			document.getElementById(tip2).innerHTML="两次输入密码不一致!"	
		}
}

function IsSafe(ObjID,TipID)
{
		var obj1=document.getElementById(ObjID);
		var obj2=document.getElementById(TipID);
		alert(obj1.value);
		var str='<'
			if(obj1.value.indexof(str)==-1)
			{
				obj2.innerHTML='请不要输入敏感字符!'
			}
}