function GetLeftLocationForDiv(eventLoc, divWidth, parentElement)
{
    if (eventLoc == null || divWidth == null)
    {
        return -1;
    }
    
    if (parentElement == null)
        parentElement = document.body;
    
    // Get the direction of the body: Right-to-Left or Left-to-Right.
    var bodyDir = "ltr";
    if (document.body.dir && document.body.dir != "")
    {
        bodyDir = document.body.dir;
    }

    var left;
    
    // If it is Left-to-Right we want to display the div to the RIGHT of the event location (e.g. the left of the div is in the current
    // event location).
    if (bodyDir == "ltr")
    {
        // Check we have place for it, if not we will display it LEFT to the event location.
        if (eventLoc + divWidth > document.body.offsetWidth)
        {
            left = eventLoc - divWidth;
        }
        else
        {
            left = eventLoc;
        }
    }
    // If it is Right-to-Left we want to display the div RIGHT to the event location.
    else
    {
        // Check if we have room RIGHT to the event location, if not show it to the LEFT of the event location.
        if (eventLoc - divWidth < 0)
        {
            left = eventLoc;
        }
        else
        {
            left = eventLoc - divWidth - 30;
        }
    }
    
    // Since we return the left realtive to the parent element we need to subtract the parent's left from
    // the event left.
    left = left - parentElement.offsetLeft;

    return left;
}

function IsNumbersOnly(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;
}

function GetAbsoluteOffsetLeft(obj) 
{
 	var left = obj.offsetLeft;
 	var parent = obj.offsetParent;
 	while ((parent != null && parent != document.body))
 	{
 		left += parent.offsetLeft;
 		parent = parent.offsetParent;
 	}
 	return left;
}

function GetAbsoluteOffsetTop(obj)   
{ 
    var top = obj.offsetTop; 
    var parent = obj.offsetParent; 
    while ((parent != null && parent != document.body))
    { 
        top += parent.offsetTop; 
        parent = parent.offsetParent; 
    } 
    return   top; 
}