function getQuerystringVariable( variable ) {
	
	var vars = window.location.search.substring(1).split("&");
	
	for (var i=0;i<vars.length;i++) { 

		var pair = vars[i].split("="); 
		if (pair[0] == variable) { 
			
			return pair[1]; 
		}
	}
	
	return null;
}


function createCookie( name, value ) {
	
	document.cookie = name+"="+value+"; path=/";
}


function readCookie(name) {
	
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	
	for(var i=0;i < ca.length;i++) {
		
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	
	return null;
}


function getVdriveusaLink( i ) {
	
	var r = readCookie("r");
	
	if( r == null )
	{
		r = 23;
	}

	window.open( "http://www.vdriveusa.com/amember/go.php?r="+r+"&i="+i, "vdriveusa" );
	
}