function setCookie(cookieName, cookieData)
{
     var cValue = "";
 	 cValue = eval(readCookie(cookieName)) +1;
	 if (cValue > 3)

	    {
	     cValue = 1;
		 window.open ("http://www.tenant-search.net/dealmakers/showad.asp","New","width=600, height=500");
		}	

	 document.cookie = cookieName + "=" + escape(cValue) + "; path=/";	
	 readCookie(cookieName);		
     //alert ('value= ' + cookieValue);
}


function readCookie(cookieName) 
{
	cookieValue = readUnescapedCookie(cookieName)
	
	if (cookieValue != null)
	{
		cookieValue = unescape(cookieValue);
	}
	
	return cookieValue;

}


function readUnescapedCookie(cookieName)
{

	var cookieValue = document.cookie;
	var cookieRegExp = new RegExp("\\b" + cookieName + "=([^;]*)");
	cookieValue = cookieRegExp.exec(cookieValue);
	
	if (cookieValue != null)
		{
	     cookieValue = cookieValue[1];
	    }
	    
	return cookieValue;
    
}