function getElementWidth(Elem) 
{
    if(document.getElementById) 
    {
        var elem = document.getElementById(Elem);
    } 
    else if (document.all)
    {
        var elem = document.all[Elem];
    }
	
    xPos = elem.style.pixelWidth;
				
    xPos = elem.offsetWidth;
	
    return xPos;
}

function getParamURL( name )
    {
      name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
      var regexS = "[\\?&]"+name+"=([^&#]*)";
      var regex = new RegExp( regexS );
      var results = regex.exec( window.location.href );
      if( results == null )
        return "";
      else
        return results[1];
    }
    
function showhide(div) // Dieu khien an hien the div con co qua div cha thong qua cach dat ten: con ^= divdiv; cha ^= div
    {
        var id= $(div).attr('id');
        id= "div" + id;
        $('[id^="divdiv"]').css('display','none');
        $('#' +id).css('display','block');
        return true;
    };
    
function convertTime(datetime)
{
    var a_p = "";
    var d = new Date(datetime);
    var curr_hour = d.getHours();

    if (curr_hour < 12)
    {
        a_p = "AM";
    }
    else
    {
        a_p = "PM";
    }
    if (curr_hour == 0)
    {
        curr_hour = 12;
    }
    if (curr_hour > 12)
    {
        curr_hour = curr_hour - 12;
    }

    var curr_min = d.getMinutes();
    
    curr_min= "0" + curr_min;
    curr_min= curr_min.substring(curr_min.length-2, curr_min.length);
    return curr_hour + ":" + curr_min + " " + a_p;
}
 
function convertDate(datetime)
{
    var d = new Date(datetime);
    var day = d.getDate();
    var month = d.getMonth() + 1;
    var year = d.getFullYear();
    return day + "/" + month+ "/" + year;
}