// form validation function //
var w3c=(document.getElementById)? true:false;
var agt=navigator.userAgent.toLowerCase();
var ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1) && (agt.indexOf("omniweb") == -1));
var ie5=(w3c && ie)? true : false;
var ns6=(w3c && (navigator.appName=="Netscape"))? true: false;
var op8=(navigator.userAgent.toLowerCase().indexOf("opera")==-1)? false:true;

function getParas(form){
var objForm=document.getElementById(form.id)
var  objFEl=objForm.elements;
var paras="";
for(var  i=0;i<objFEl.length;i++){
  var strValue=objFEl[i].value;
  var strName=objFEl[i].name;
  paras+="&" + strName + "=" & strValue
  }
getParas= paras;
	}
function valiForm(form) {
var objForm=document.getElementById(form.id)
var  objFEl=objForm.elements;
for(var  i=0;i<objFEl.length;i++){
  try{
  var strValue=objFEl[i].value;
  var strName=objFEl[i].name;
  var strErrMsg=objFEl[i].errMsg;
  var strMisMsg=objFEl[i].misMsg;
  var strRequire=objFEl[i].required;
  var strType=objFEl[i].dataType;
  var iMaxLen=objFEl[i].maxLength;
	}catch(e){
		
		}
		if(strMisMsg==undefined){
			strMisMsg="此处不能为空！";
			}
  if (objFEl[i].type=="text" || objFEl[i].type=="select" || objFEl[i].type=="password"){
      var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
      var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
      var messageRegex = new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);
      if(strRequire == "true" && strValue=="") {
        inlineMsg(strName,strMisMsg,2);
		objFEl[i].focus();
        return false;
      }
    with (strValue){
      var count = length;
      var bytes = replace(/([\u0391-\uFFE5])/ig,'11').length;
      if (parseInt(bytes)>parseInt(iMaxLen) && parseInt(iMaxLen)>0){
        inlineMsg(strName,"录入的值超长：录入值不能超过"+iMaxLen+"位（一个汉字相当于2位英文字符）",2);
		objFEl[i].focus();
        return false;
      }
    }

      if(strType=="email" &&  strValue == "" && strRequire == "true") {
        inlineMsg(strName,strMisMsg,2);
		objFEl[i].focus();
        return false;
      }
      if(!strValue.match(emailRegex) && strType=="email") {
        inlineMsg(strName,strErrMsg,2);
		objFEl[i].focus();
        return false;
      }
  }
}

  return true;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 80;
var MSGHIDE = 3;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
  var msg;
  var msgcontent;
  if(!document.getElementById('msg')) {
    msg = document.createElement('div');
    msg.id = 'msg';
    msgcontent = document.createElement('div');
    msgcontent.id = 'msgcontent';
    document.body.appendChild(msg);
    msg.appendChild(msgcontent);
    msg.style.filter = 'alpha(opacity=0)';
    msg.style.opacity = 0;
    msg.alpha = 0;
  } else {
    msg = document.getElementById('msg');
    msgcontent = document.getElementById('msgcontent');
  }
  msgcontent.innerHTML = string;
  msg.style.display = 'block';
  var msgheight = msg.offsetHeight;
  var targetdiv = document.getElementById(target);
  var targetheight = topPosition(targetdiv);
  var targetwidth = targetdiv.offsetLeft;

  var topposition = getOjbY(targetdiv);
  var leftposition = getOjbX(targetdiv) + targetwidth + MSGOFFSET;
  msg.style.top = topposition + 'px';
  msg.style.left = leftposition + 'px';
  clearInterval(msg.timer);
  msg.timer = setInterval("fadeMsg(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsg()", (autohide * 1000));
}

// hide the form alert //
function hideMsg(msg) {
  var msg = document.getElementById('msg');
  if(!msg.timer) {
    msg.timer = setInterval("fadeMsg(0)", MSGTIMER);
  }
}

// face the message box //
function fadeMsg(flag) {
  if(flag == null) {
    flag = 1;
  }
  var msg = document.getElementById('msg');
  var value;
  if(flag == 1) {
    value = msg.alpha + MSGSPEED;
  } else {
    value = msg.alpha - MSGSPEED;
  }
  msg.alpha = value;
  msg.style.opacity = (value / 100);
  msg.style.filter = 'alpha(opacity=' + value + ')';
  if(value >= 99) {
    clearInterval(msg.timer);
    msg.timer = null;
  } else if(value <= 1) {
    msg.style.display = "none";
    clearInterval(msg.timer);
  }
}

// calculate the position of the element in relation to the left of the browser //
function leftPosition(target) {
  var left = 0;
  if(target.offsetParent) {
    while(1) {
      left += target.offsetLeft;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.x) {
    left += target.x;
  }
  return left;
}

// calculate the position of the element in relation to the top of the browser window //
function topPosition(target) {
  var top = 0;
  if(target.offsetParent) {
    while(1) {
      top += target.offsetTop;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.y) {
    top += target.y;
  }
  return top;
}

// preload the arrow //
if(document.images) {
  arrow = new Image(7,80); 
  arrow.src = "/ajax/images/msg_arrow.gif"; 
}
function getOjbX(obj) {
var nLt=0;
var nTp=0;
 var offsetParent = obj;
 while (offsetParent!=null && offsetParent!=document.body) {
 nLt+=offsetParent.offsetLeft;
 nTp+=offsetParent.offsetTop;
 if(!ns6){
    parseInt(offsetParent.currentStyle.borderLeftWidth)>0?nLt+=parseInt(offsetParent.currentStyle.borderLeftWidth):"";
    parseInt(offsetParent.currentStyle.borderTopWidth)>0?nTp+=parseInt(offsetParent.currentStyle.borderTopWidth):"";
 }
 offsetParent=offsetParent.offsetParent;
 //alert(offsetParent.tagName);
 }
 return nLt;
}
function getOjbY(obj) {
var nLt=0;
var nTp=0;
 var offsetParent = obj;
 while (offsetParent!=null && offsetParent!=document.body) {
 nLt+=offsetParent.offsetLeft;
 nTp+=offsetParent.offsetTop;
 if(!ns6){
    parseInt(offsetParent.currentStyle.borderLeftWidth)>0?nLt+=parseInt(offsetParent.currentStyle.borderLeftWidth):"";
    parseInt(offsetParent.currentStyle.borderTopWidth)>0?nTp+=parseInt(offsetParent.currentStyle.borderTopWidth):"";
 }
 offsetParent=offsetParent.offsetParent;
 //alert(offsetParent.tagName);
 }
 return nTp;
}