//********************************************************************
//*	       Name:	common_scripts.js
//*	Description:	JavaScript functions for pierrelandscaping.com
//*	    Created:	12/04/2007
//*	    Updated:	12/04/2007
//********************************************************************

//********************************************************************
//* Cookie Functions
//* Various functions to set, retrieve and remove cookies
//********************************************************************
function setCookie(name, value)
 {
	 //If name is the empty string, it places a ; at the beginning
	 //of document.cookie, causing clearCookies() to malfunction.
	 if(name != '')
	 document.cookie = name + '=' + value;
 }

function getCookie(name)
{
	//Without this, it will return the first value 
	//in document.cookie when name is the empty string.
	if(name == '')
		return('');
		
	name_index = document.cookie.indexOf(name + '=');
	
	if(name_index == -1)
		return('');
	
	cookie_value =  document.cookie.substr(name_index + name.length + 1, 
	document.cookie.length);
	
	//All cookie name-value pairs end with a semi-colon, except the last one.
	end_of_cookie = cookie_value.indexOf(';');
	if(end_of_cookie != -1)
		cookie_value = cookie_value.substr(0, end_of_cookie);
	
	//Restores all the blank spaces.
	space = cookie_value.indexOf('+');
	while(space != -1)
	{ 
		cookie_value = cookie_value.substr(0, space) + ' ' + 
		cookie_value.substr(space + 1, cookie_value.length);
	
		space = cookie_value.indexOf('+');
	}
	
	return(cookie_value);
}

function clearCookie(name)
{                  
	expires = new Date();
	expires.setYear(expires.getYear() - 1);
	
	document.cookie = name + '=null' + '; expires=' + expires; 		 
}
         
function clearCookies()
{
	Cookies = document.cookie;
	Cookie = Cookies;
	expires = new Date();
	expires.setYear(expires.getYear() - 1);
	
	while(Cookie.length > 0)
	{
		//All cookie name-value pairs end with a semi-colon, except the last one.
		Cookie = Cookies.substr(0, Cookies.indexOf(';'));
		Cookies = Cookies.substr(Cookies.indexOf(';') + 1, Cookies.length);
	
		if(Cookie != '')
			document.cookie = Cookie + '; expires=' + expires;
		else
			document.cookie = Cookies + '; expires=' + expires;			  			  	  
	}		 		 
}