function getQueryVariable(variable) 
{
	var query = window.location.search.substring(1);
	var vars = query.split("&");
	for (var i=0;i<vars.length;i++) 
	{
		var pair = vars[i].split("=");
		if (pair[0] == variable) 
		{
			return pair[1];
		}
	}
}

function getCurrentPageName()
{
	var sPath = window.location.pathname;
	var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
	return sPage;
}

function Set_Cookie( name, value, expires, path, domain, secure ) 
{
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );

	/*
	if the expires variable is set, make the correct 
	expires time, the current script below will set 
	it for x number of days, to make it for hours, 
	delete * 24, for minutes, delete * 60 * 24
	*/
	if ( expires )
	{
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );

	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
	( ( path ) ? ";path=" + path : "" ) + 
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

function Get_Cookie( name ) {
	
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
	{
		return null;
	}
	
	if ( start == -1 ) return null;
	
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function Delete_Cookie( name, path, domain ) {
	if ( Get_Cookie( name ) ) document.cookie = name + "=" + ( ( path ) ? ";path=" + path : "") + ( ( domain ) ? ";domain=" + domain : "" ) + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function setSurveyCookies()
{
	//Set cookies for survey
	if(getQueryVariable('Merchant') != null)
	{
		Delete_Cookie('MerchantID', '/', '');
		Delete_Cookie('CategoryGroupExternalID', '/', '');
		Delete_Cookie('CategoryExternalID', '/', '');		
		Set_Cookie( 'Merchant', getQueryVariable('Merchant'), 30, '/', '', '' );
		Set_Cookie( 'CategoryGroupExternalID', getQueryVariable('CategoryGroupExternalID'), 30, '/', '', '' );		
		Set_Cookie( 'CategoryExternalID', getQueryVariable('CategoryExternalID'), 30, '/', '', '' );
	}
}

function launchSurveyWindow(title, url, width, height, scrollbars, resizable)
{
	//IE
	if(window.event) {
		if (window.event.clientX < 0 || window.event.clientY < 0)
		{	
			window.open(url,title,'location=no,scrollbars=' +
			scrollbars + ',title=no,width=' + width + ',height=' +
			height + ',resizable=' + resizable);			

			//Cleanup
			Delete_Cookie('MerchantID', '/', '');
			Delete_Cookie('SalesCategoryGroupID', '/', '');			
			Delete_Cookie('SalesCategoryID', '/', '');
		}
	}
}

// --------------------
// MAIN 
// --------------------
setSurveyCookies();