function getElementPos(el) {       
    var ua = navigator.userAgent.toLowerCase();     
    var isOpera = (ua.indexOf('opera') != -1);     
    var isIE = (ua.indexOf('msie') != -1 && !isOpera); // not opera spoof       
    //var el = document.getElementById(elementId);       
    if(el.parentNode === null || el.style.display == 'none'){        
        return false;     
    }       
    var parent = null;     
    var pos = [];     
    var box;       
    if(el.getBoundingClientRect)    //IE     
    {
         box = el.getBoundingClientRect();         
         var scrollTop = Math.max(document.documentElement.scrollTop, document.body.scrollTop);         
         var scrollLeft = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft);           
         return {x:box.left + scrollLeft, y:box.top + scrollTop};     
    }     
    else if(document.getBoxObjectFor)   // gecko     
    {         
        box = document.getBoxObjectFor(el);           
        var borderLeft = (el.style.borderLeftWidth)?parseInt(el.style.borderLeftWidth):0;         
        var borderTop = (el.style.borderTopWidth)?parseInt(el.style.borderTopWidth):0;           
        pos = [box.x - borderLeft, box.y - borderTop];     
    }     
    else    // safari & opera     
    {         
            pos = [el.offsetLeft, el.offsetTop];         
            parent = el.offsetParent;         
            if (parent != el) {             
                while (parent) {                 
                    pos[0] += parent.offsetLeft;                 
                    pos[1] += parent.offsetTop;                 
                    parent = parent.offsetParent;
                }         
            }         
            if (ua.indexOf('opera') != -1  || ( ua.indexOf('safari') != -1 && el.style.position == 'absolute' ))         
            {                 
                pos[0] -= document.body.offsetLeft;                 
                pos[1] -= document.body.offsetTop;         
            }     
    }       
    if (el.parentNode) 
    { 
        parent = el.parentNode; 
    }     
    else { parent = null; }       
    while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML')     
    { // account for any scrolled ancestors         
        pos[0] -= parent.scrollLeft;         
        pos[1] -= parent.scrollTop;           
        if (parent.parentNode) { parent = parent.parentNode; }         
        else { parent = null; }     
    }     
    return {x:pos[0], y:pos[1]}; 
} 

function getPosition(el){
    if( el==undefined ) return '0,0';
    var pos = getElementPos(el);
    var posValue = pos['x']+","+pos['y'];
    return posValue;
}
function getNowFormatDate()
{
   var day = new Date();

   var Year = 0;
   var Month = 0;
   var Day = 0;
var CurrentDate = "";
   //初始化时间
   //Year       = day.getYear();//有火狐下2008年显示108的bug
   Year       = day.getFullYear();//ie火狐下都可以
   Month      = day.getMonth()+1;
   Day        = day.getDate();
   
   CurrentDate += Year + "-";
   
   if (Month >= 10 )
   {
    CurrentDate += Month + "-";
   }
   else
   {
    CurrentDate += "0" + Month + "-";
   }
   if (Day >= 10 )
   {
    CurrentDate += Day ;
   }
   else
   {
    CurrentDate += "0" + Day ;
   }

   return CurrentDate;
}