//Hides the image container if no image is rendered.
function HideImageContainerIfEmpty()
{
	var divContainer = document.getElementById('PageImageTextContainer');
	
	var divContainerItems = divContainer.getElementsByTagName('img');
	
	if(divContainerItems.length == 0)
	{
		divContainer.style.display = 'none';
		return true;
	}
	else
		return false;
}

function OnlyAllowNumbers(e)
{
    var keynum;
var keychar;
var numcheck;

if(window.event) // IE
{
keynum = e.keyCode;
}
else if(e.which) // Netscape/Firefox/Opera
{
keynum = e.which;
}
keychar = String.fromCharCode(keynum);
numcheck = /\d/;
return numcheck.test(keychar);
}