function getselectdata(select) 
{  
    var s =document.getElementById(select); 
    var pindex = s.selectedIndex; 
    var sv = s.options[pindex].value; 
    return sv;
}
function gettbdata(tb) 
{  
    var s =document.getElementById(tb); 
    var sv = s.value; 
    return sv;
}

function getselectid(select)
{
    var s =document.getElementById(select); 
    return s;
}

function getcheckbox(cb) 
{  
    var s =document.getElementById(tb); 
    var sv = s.Checked; 
    return sv;
}
function jsSelectItemByValue(objSelect,objItemValue)
{    
     //判断是否存在
     var isExit = false;
     for(var i=0;i<objSelect.options.length;i++)
     {
         if(objSelect.options[i].value == objItemValue)
         {
             objSelect.options[i].selected = true;
             isExit = true;
             break;
         }
     }   
     
}
function closeWindow(obj){ var div = document.getElementById(obj);div.style.display="none";}
function viewWindows(obj){var div = document.getElementById(obj);div.style.display="block";}

Date.prototype.format = function(format)
{
var o = {
"M+" : this.getMonth()+1, //month

"d+" : this.getDate(), //day

"h+" : this.getHours(), //hour

"m+" : this.getMinutes(), //minute

"s+" : this.getSeconds(), //second

"q+" : Math.floor((this.getMonth()+3)/3), //quarter

"S" : this.getMilliseconds() //millisecond

}
if(/(y+)/.test(format))
format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4 - RegExp.$1.length));
for(var k in o)
if(new RegExp("("+ k +")").test(format))
format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length));
return format;
}