常用javascript function整理

這些function 是從網路收集來的，出處己經忘記

//=============檢驗Mail強制為a-z&0-9的數字==========
    function ValidateFieldMail(objMail)
    {
        var email = objMail.value;
        var rege = /^([a-zA-Z0-9])+([a-zA-Z0-9])+([a-zA-Z0-9])+([a-zA-Z0-9])+([a-zA-Z0-9])+([a-zA-Z0-9])/;
        if (email.length == 0 || rege.exec(email) == null)
        {
            objMail.value ="";
            alert("請參照密碼規則");           
            //return false;
        }
        objMail.value = objMail.value.toString().toUpperCase() ;
        //return true;
    }




//================檢查是否為數字==================
    function IsNumeric(sText){
       var ValidChars = "0123456789.";
       var IsNumber=true;
       var Char;
    
       for (i = 0; i < sText.length && IsNumber == true; i++)
          {
          Char = sText.charAt(i);
          if (ValidChars.indexOf(Char) == -1)
             {
             IsNumber = false;
             }
          }
       return IsNumber;
    }

//=============彈跳視窗置中=====================
    function NewWindow(mypage, myname, w, h, scroll) {
        // resizable 是否許可設定視窗尺寸 yes 或 no
        // toolbar 是否展示工具列 yes 或 no
        // status 是否顯示狀態列 yes 或 no
        var winl = (screen.width - w) / 2;
        var wint = (screen.height - h) / 2;
        winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+', scrollbars='+scroll+',resizable=yes,toolbar=no, status=no'; 
        win = window.open(mypage, myname, winprops);
        if ( parseInt(navigator.appVersion) >= 4){
            win.window.focus();
        }
    }

//=============另一個彈跳視窗======================
    function Open_Window(loc, form, id , name) {
        var loc;
        loc = loc+"?form="+form+"&form_id="+id+"&form_name="+name;
        self.win_child=window.open(loc,"getcode","directories=no,location=no,menubar=no,toolbar=no,scrollbars=yes,height=600,width=700");
        self.win_child.rtn_id=id;
        self.win_child.rtn_name=name;
        self.win_child.win_parent=self;
    }      

//===============強制為單選=======================
    function ChooseOne(cb){
        //先取得同name的chekcBox的集合物件
        var obj = document.getElementsByName("pac_ite_no");
        for (i=0; i<obj.length; i++){
            //判斷obj集合中的i元素是否為cb，若否則表示未被點選
            if (obj!=cb) obj.checked = false;
            //若是 但原先未被勾選 則變成勾選；反之 則變為未勾選
            else  obj.checked = cb.checked;
            //若要至少勾選一個的話，則把上面那行else拿掉，換用下面那行
            //else obj.checked = true;
        }
    }