//check if the crippled window exists
var crip = null;
function NewPopupWindow(url)
	{
		if((crip == null) || (crip.closed)) 
		{
			crip = window.open(url, 'popupwindow', 'toolbar=yes,menubar=no,scrollbars=yes,width=640,height=480,resizable=yes');
			crip.focus();
		}
		else
		{
			crip.navigate(url);
			crip.focus();
		}
	}
function CloseOldWindow()
	{
		if(crip != null) 
		{
			crip.close();
		}
	}
function NewBigPopupWindow(url)
	{
		if((crip == null) || (crip.closed)) 
		{
			crip = window.open(url, 'popupwindow', 'toolbar=yes,menubar=no,scrollbars=yes,width=800,height=400,resizable=yes');
			crip.focus();
		}
		else
		{
			crip.navigate(url);
			crip.focus();
		}
	}
function CloseOldWindow()
	{
		if(crip != null) 
		{
			crip.close();
		}
	}
function PreviewWindow()
	{
		if((crip == null) || (crip.closed)) 
		{
			crip = window.open('http://www.beta.cdw.com', 'PreviewWindow', 'toolbar=yes,menubar=no,scrollbars=yes,width=800,height=600,resizable=yes');
			crip.focus();
		}
		else
		{
			crip.navigate(url);
			crip.focus();
		}
	}
	function CloseOldWindow()
	{
		if(crip != null) 
		{
			crip.close();
		}
	}