function getTimeStamp(){
  d=new Date();
  return ("ts="+d.getTime());
}

/*替换字符串某位置的字符*/
function replace(str,pos,ch){
  if ((pos>=str.length) || (pos<0)){
    return str;
  }
  var s1=str.substr(0,pos);
  var s2=str.substr(pos+1,str.length-pos);
  return (s1+ch+s2);
}


//传入一个float和几位小数，返回一个四舍五入的数字
function num_round(num,num_int){
	var num10 = 1;
	for (var i = 0; i < num_int; i++)
		num10 = num10*10;
	var temp_num = Math.round(num*num10);
	var str_num = temp_num.toString();
	return (str_num.substr(0,str_num.length-num_int)+'.'+str_num.substr(str_num.length-num_int,str_num.length));
}

function trim(str)
{
  var strTmp;
  if ((str=="")||(str==null))
    return "";
  for(var i = 0 ; i<str.length && str.charAt(i)==" " ; i++ ) ;
  strTmp = str.substring(i,str.length);
  
  for(var i = strTmp.length - 1; i > 0 && strTmp.charAt(i)==" "; i--) ;
  strTmp = strTmp.substring(0,i+1);
  
  return strTmp;
}
// if there are same char in strSource and strInvalid, return false.
//For example: strSource="Abcdef'gh", strInvalid=" ';*& ", the result is false. because
// the strSource has "'"
function isValidStr(strSource,strInvalid)
{
  var isValid = true;
  for(var i=0;i<strSource.length && isValid==true;i++) {
    for(var j=0;j<strInvalid.length;j++) {
      if (strSource.charAt(i)==strInvalid.charAt(j)) {
    	isValid = false;
    	break;
      }
    }
  }
  return isValid;
}

/*正常有效的输入值应该避免的字符*/
function getInValidStr()
{
  return("'&*?%\"");
}

//回车时换行
function autoTab(input_str){
    var keyCode = event.keyCode;
    var key = 0;
    if (keyCode==13) {
        var index = -1, i = 0, found = false;
        while (i < input_str.form.length-1 && index == -1){
            if (input_str.form[i] == input_str )
            {
                if ((input_str.form[i+1].type=='text')&&(!input_str.form[i+1].readOnly)||(input_str.form[i+1].type=='button'))
                {
                    index = i;
                    key = 1;
                }
                else
                {
                    input_str = input_str.form[i+1];
                    i++;
                }
            }
            else i++;
        }
        if (key==1)
            input_str.form[(index+1)].focus();
    }
}

//回车时换行，按向上箭头按钮往前退一个，没有成功最后转到button_name
function new_autoTab(input_str,button_name){
    var keyCode = event.keyCode;
    var key = 0;
    if (keyCode==13) {
        var index = -1, i = 0, found = false;
        while (i < input_str.form.length-1 && index == -1)
		{
            if (input_str.form[i] == input_str )
            {
                if ((input_str.form[i+1].type=='text')
					&&(!input_str.form[i+1].readOnly && !input_str.form[i+1].disabled && input_str.form[i+1].style.display!='none')
					||(input_str.form[i+1].type=='button'))
                {
                    index = i;
                    key = 1;
                }
                else
                {
                    input_str = input_str.form[i+1];
                    i++;
                }
            }
            else i++;

			if (key==1)
			{
				try
				{
					input_str.form[(index+1)].focus();
				}
				catch (e)
				{
					key = 0;
					index = -1;
                    input_str = input_str.form[i+1];
					i++;
				}
			}
			else
					eval(button_name).focus();
        }
    }
    if (keyCode==38) {
        var index = -1, i = input_str.form.length-1, found = false;
        while (i > 0 && index == -1){
            if (input_str.form[i] == input_str )
            {
                if ((input_str.form[i-1].type=='text')&&(!input_str.form[i-1].readOnly)||(input_str.form[i-1].type=='button'))
                {
                    index = i;
                    key = 1;
                }
                else
                {
                    input_str = input_str.form[i-1];
                    i--;
                }
            }
            else i--;

			if (key==1)
			{
				try
				{
					input_str.form[(index-1)].focus();
				}
				catch (e)
				{
					key = 0;
					index = -1;
                    input_str = input_str.form[i-1];
					i--;
				}
			}
			else
					eval(button_name).focus();
        }
    }
}

//whether str is a  number.
function isNumber(str)
{
  var oneChar;
  var isNum = true;
  
  str=str+"";
  
  if(str.length==0)
    return false;
 
  if(str.charAt(0)=="-"||str.charAt(0)=="."){
    str=str.substr(1,str.length-1);
  }
  
  if(str.length==0)
    return false;  

  for(var i=0; i<str.length; i++) {
	  oneChar = str.charAt(i);
		if((oneChar<"0"||oneChar>"9") && oneChar!=".") {
      isNum = false;
    }
  }
  return isNum;
}

//whether str is a integer number.
function isInteger(str)
{
  var oneChar;
  var isNum = true;
  
  str=str+"";
  
  if(str.length==0)
    return false;

  if(str.charAt(0)=="-"){
    str=str.substr(1,str.length-1);
  }
  
  if(str.length==0)
    return false;
  
  for(var i=0; i<str.length; i++) {
	  oneChar = str.charAt(i);
		if(oneChar<"0"||oneChar>"9") {
      isNum = false;
    }
  }
  return isNum;
}

//whether str is a  number,小数点必须在几位内
function isNumberXsd(str,nxsd)
{
  var oneChar;
  var isHasXsd=false;
  var iXSD=-1;
  
  var isNumTure=false;
  
  str=trim(str);
  
  if(nxsd<0)
    return false;
  else if(nxsd==0){
    return isInteger(str);
  }
  else if(!isNumber(str))
    return false;
    
  for(var i=str.length; i>0; i--) {
	  oneChar = str.charAt(i);
    if(oneChar!=".")
      iXSD=iXSD+1;
    else{
      isHasXsd=true; 
      break;
    }
  }
  
  if (isHasXsd){
    if(iXSD<=nxsd)
      isNumTure=true;
  }
  else{
    isNumTure=true;
  }
  
  return isNumTure;
}


//whether the length of str is too big.
function isLenValid(str,strLen)
{
  if (str.length > strLen) {
    return false;
  } else {
    return true;
  }
}
//replace the space in parameter "str" with "%20" after trim "str".
function convertStr(str){
  var t="";
  var strTmp = trim(str);
  for(var i=0;i<strTmp.length;i++){
    if (strTmp.charAt(i)==" ")
      t+="%20";
    else
      t+=strTmp.charAt(i);
  }
  return t;
}


//获取字符串的真真长度
function strlength(str){
  var iLen=0;
  if(str.length>0){
	  for(var i=0;i<str.length;i++){
	    if(str.charAt(i)>="\u0080")
	      iLen+=2;
	    else
	      iLen+=1;
	  }
	}
  return iLen;
}

function viewCalendar(obj){
  showx = event.screenX;
  showy = event.screenY;
  newWINwidth = 210+4+18;

  retval = window.showModalDialog("../CalendarDlg.htm", "", "dialogWidth:197px; dialogHeight:210px; dialogLeft:"+showx+"px; dialogTop:"+showy+"px; status:no; directories:yes;scrollbars:no;Resizable=no; "  );
  if(retval != null ){
     obj.value=retval;
  }
  obj.focus();
}

function isValidStringObj(obj,objname,must){
  var s=trim(obj.value);

  if(s==""){
    if(must){
      alert(objname+"必须填写！");
      obj.focus();
      return false;
    }
    else{
      return true;
    }
  }
  if(!isValidStr(s,getInValidStr())){
    alert(objname+"不能包含字符"+getInValidStr()+"！");
    obj.focus();
    return false;
  }
   return true;
}

function isValidIntegerObj(obj,objname,must){
  var s=trim(obj.value);
  
  if(s==""){
    if(must){
      alert(objname+"必须填写！");
      obj.focus();
      return false;
    }
    else{
      return true;
    }
  }
  if(!isInteger(s)){
    alert(objname+"必须为整数！");
    obj.value="";
    obj.focus();
    return false;
  }
   return true;
}

function isValidNumberObj(obj,objname,must){
  var s=trim(obj.value);
  
  if(s==""){
    if(must){
      alert(objname+"必须填写！");
      obj.focus();
      return false;
    }
    else{
      return true;
    }
  }
  if(!isNumber(s)){
    alert(objname+"必须为数字！");
    obj.value="";
    obj.focus();
    return false;
  }
   return true;
}

function isValidDateObj(obj,objname,must){
  var s=trim(obj.value);
  
  if(s==""){
    if(must){
      alert(objname+"必须填写！");
      obj.value="";
      obj.focus();
      return false;
    }
    else{
      return true;
    }
  }
  if(!isDate(s)){
    alert(objname+"必须为日期格式yyyy-mm-dd！");
    obj.value="";
    obj.focus();
    return false;
  }
   return true;
}

function isValidStringLength(obj,objname,len){
  var s=trim(obj.value);
  if(strlength(s)>len){
    alert(objname+"超出长度限制 "+len+" ！");
    obj.focus();
    return false;
  }
  return true;
}

function isValidStringLength_obj(obj,objname,len,must){
  var s=trim(obj.value);

  if(s==""){
    if(must){
      alert(objname+"必须填写！");
      obj.focus();
      return false;
    }
    else{
      return true;
    }
  }
  if(!isValidStr(s,getInValidStr())){
    alert(objname+"不能包含字符"+getInValidStr()+"！");
    obj.value="";
    obj.focus();
    return false;
  }
  if(strlength(s)>len){
    alert(objname+"超出长度限制 "+len+" ！");
    obj.value="";
    obj.focus();
    return false;
  }
  
  return true;   
}

function isDate(s){
  var ary=s.split("-");
  if(ary.length!=3){
    return false;
  }
  if(!(isInteger(ary[0])&&isInteger(ary[1])&&isInteger(ary[2]))){
    return false;
  }
  return true;
}
function StrToDate(str){
  str=trim(str);
  var ary=str.split("-");
  if(ary.length!=3){
    return null;
  }
  if(!(isInteger(ary[0])&&isInteger(ary[1])&&isInteger(ary[2]))){
    return null;
  }
  return new Date(ary[0],(ary[1]-1),ary[2]);
}

function CompStrDate(sd1,sd2){
  sd1=trim(sd1);
  sd2=trim(sd2);
  var d1=StrToDate(sd1);
  var d2=StrToDate(sd2);
  if(d1==null||d2==null){
    return true;
  }
  if(d1.getTime()-d2.getTime()>=0){
    return true;
  }
  else{
    return false;
  }
}

function CompDate(d1,d2){
  if(d1==null||d2==null){
    return true;
  }
  if(d1.getTime()-d2.getTime()>=0){
    return true;
  }
  else{
    return false;
  }
}


 /**
   * 是否是合法的Email地址
   * @return boolean
   */
  function isEmail(s)
  {
    var regu = "^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|com|gov|mil|org|edu|int)$";
    var re   = new RegExp(regu);
    
	if (s.search(re) != -1)
	{
      return true;
    }
	else
	{
	  return false;
    }
  }

  function isInt(s){
	//alert(s);
	if (s.match("^[0-9]+$"))
	{
      return true;
    }
	else
	{
	  return false;
    }
  }
  function isFloat(s){
	
	if (isInt(s) || s.match("^[0-9]+.[0-9]{0,2}$"))
	{
      return true;
    }
	else
	{
	  return false;
    }
  }
function dosubmit(){

				if (checkInput()==true){
					document.frm.submit();
				}
}
function checkStrlen(obj,name,len){ 
	 var s=trim(obj.value);
	 if (strlength(s)>len)
	 {
		 alert(name+"长度必须小于等于"+len);
		 obj.focus();
         return false;
	 }
	 return true;
}

function body_keydown(){
  if(window.event.srcElement.tagName=="INPUT"||window.event.srcElement.tagName=="SELECT"||window.event.srcElement.tagName=="A"){
    if(event.keyCode==13){
      event.keyCode=9;
    }
  }
}