/* Liberty Mutual Custom Entrance/Exit Survey */
/* author Benjamin Wilson ben.wilson@valtira.net */

/*
Cookies with description of each:

vlt_firstEntrance - set only if google entrance-variation is choosen and it's the user's first visit (expires @ session end) vlt_entranceVariation - set if entrance-variation is loaded via google (expires @ session end) vlt_entranceOffer - set when the entrance survey offer has been made, we only show entrance once (expires never, it's sticky) vlt_entranceTaken - set if the visitor opts-in to the survey, used to not bother them afterwards (expires never) vlt_exitVariation - set if exit-variation is loaded via google (expires @ session end) vlt_exitOffer - set when the exit survey offer has been made (! 
Important expires @ session end)
vlt_exitTaken - set if the visitor opts-in to the survey, used to not bother them on subsequent visits (expires never) vlt_pageViews - keeps count of how many pages have been viewed, at a specific number exit survey is shown (expires @ session end)

*/


/* Global Vars

vlt_pageViewsTrigger - this var works with the pageViews cookie to determine when to show the exit survey vlt_oldY - var is used to determine mouse direction vlt_externalPath - stores external path to redirect on exit popup vlt_refUrl - is passed to the survey to track what website lead the visitor to the current site vlt_entrancePopupPath - url path to the popup for the opt-in entrance survey vlt_exitPopupPath - url path to the popup for the opt-in exit survey

*/
var vlt_pageViewsTrigger = 5;
var vlt_oldY = 0;
var vlt_externalPath = "";
var vlt_refUrl = "";
var vlt_entrancePopupPath = "/common/html/valtira/popup.html";
var vlt_exitPopupPath = "/common/html/valtira/exitpopup.html";


/* Functions

vlt_offerEntrance - brings a thickbox up, allowing the visitor to opt- in for entrance survey vlt_offerExit - brings a thickbox up, allowing the visitor to opt-in for exit survey vlt_listenForExit - sets mouse and external link listeners to bring up thickbox for exit survey vlt_redirectExternalLink - takes a path and redirects browser to the path provided vlt_openSurvey - creates a new window where the visitor can take the survey vlt_initThickboxSurveyLink - sets up links in thickbox to open survey

--- Provided from http://techpatterns.com/downloads/javascript_cookies.php
vlt_Get_Cookie
vlt_Set_Cookie
vlt_Delete_Cookie

*/
function vlt_offerEntrance () {
   // Launch MODAL BOX
   var t=setTimeout("tb_show('Welcome', vlt_entrancePopupPath+'?height=180&width=300', '')",1000);
   /* Set vlt_entranceOffer cookie - don't expire only shown once,
      all subsequent visits exit survey only */
   vlt_Set_Cookie( 'vlt_entranceOffer', 'true', '1000', '/', '', '' );
   /* Set vlt_entranceOffer cookie - don't expire only shown once,
      all subsequent visits exit survey only */
   vlt_Set_Cookie( 'vlt_firstEntrance', 'true', '', '/', '', '' ); }


function vlt_offerExit () {
   // Launch MODAL BOX
   tb_show("", vlt_exitPopupPath+"?height=180&width=300", "");
   /* Set vlt_exitOffer cookie - expires at end of session */
   vlt_Set_Cookie( 'vlt_exitOffer', 'true', '', '/', '', '' ); }


function vlt_listenForExit () {

     /* If visitor leaves page, show exit survey */
     $(document).mousemove(function(e) {
     	
       // figure out the offset if they visitor has scrolled	
       var vlt_scrOfY = 0;	
       if( typeof( window.pageYOffset ) == 'number' ) {
	    //Netscape compliant
	    vlt_scrOfY = window.pageYOffset;
	  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
	    //DOM compliant
	    vlt_scrOfY = document.body.scrollTop;
	  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
	    //IE6 standards compliant mode
	    vlt_scrOfY = document.documentElement.scrollTop;
	  }
	
       var vlt_offSetTop = e.pageY - vlt_scrOfY;

       if(vlt_offSetTop <= 5 && e.pageY < vlt_oldY && !vlt_Get_Cookie
('vlt_exitOffer')) {
         vlt_offerExit();
       }
       //set new position for next check
       vlt_oldY = e.pageY;
     });

     /* Find all external links and offer exit survey before redirect */
     $('a').filter(function() {
       return this.hostname && this.hostname !== location.hostname;
     }).click(function () {
       if(!vlt_Get_Cookie('vlt_exitOffer')) {
         vlt_offerExit();
         vlt_externalPath = this.href;
         var vlt_path = this.href;
         setTimeout('vlt_redirectExternalLink("'+vlt_path+'");',8000);
         return false;
       } else {
         return true;
       }
     });
}


function vlt_redirectExternalLink ( path ) {
   location.href=path;
}


function vlt_openSurvey ( pageURL,title,w,h ) {
   var vlt_left = (screen.width/2)-(w/2);
   var vlt_top = (screen.height/2)-(h/2);
   var vlt_pUrl = pageURL+"?referringUrl="+vlt_refUrl 
+"&lastPage="+document.title;
   var vlt_targetWin = window.open (vlt_pUrl, '', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+vlt_top 
+', left='+vlt_left);
}


function vlt_initThickboxSurveyLink ( ) {
   // setup link for either enterance or exit survey
   $("a#surveyLink").click(function ( ) {
     // set survey taken cookie based on entranceVariation or exitVariation cookie
     if( vlt_Get_Cookie( 'vlt_entranceVariation') ) {

       vlt_Set_Cookie( 'vlt_entranceTaken', 'true', '1000', '/', '', '' );

     } else {

       vlt_Set_Cookie( 'vlt_exitTaken', 'true', '1000', '/', '', '' );

     }

     vlt_openSurvey(this.href, "Liberty Mutual Survey", 500, 600);

     return false;
   });
   $("a#redirectNow").click(function ( ) {
     $(this).attr('href', vlt_externalPath);
   });
}


function vlt_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 vlt_Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g,
'') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}


// this deletes the cookie when called
function vlt_Delete_Cookie( name, path, domain ) {
   if ( vlt_Get_Cookie( name ) ) document.cookie = name + "=" +
   ( ( path ) ? ";path=" + path : "") +
   ( ( domain ) ? ";domain=" + domain : "" ) +
   ";expires=Thu, 01-Jan-1970 00:00:01 GMT"; }




/* On load functionality */
$(document).ready( function() {

   /* check for referral URL */
   /* this code is to provide the referral url from the first page of the site
      if not from an off-site link, then it's set to the first page
    */
   if (vlt_Get_Cookie('vlt_refUrl')) {
     // var is passed into the survey call
     vlt_refUrl = vlt_Get_Cookie('vlt_refUrl');
   } else {
     vlt_refUrl = document.referrer;
     vlt_Set_Cookie('vlt_refUrl', vlt_refUrl, '', '/', '', '');
   }

   /* First check pageViews cookie
      After x number of pages show exit survey (number set in showSurveyPageNumber var)
   */
   if ( vlt_Get_Cookie( 'vlt_pageViews' ) ) {
     var vlt_pageViews = parseInt(vlt_Get_Cookie( 'vlt_pageViews' ))+1;
     // showSurveyPageNumber is set in the global vars of this page
     if(vlt_pageViews == vlt_pageViewsTrigger) {
       // only offer the exit survey if the visitor has never taken the survey and hasn't been offered this time
       var vlt_exitTaken = vlt_Get_Cookie ( 'vlt_exitTaken' );
       var vlt_entranceTaken = vlt_Get_Cookie ( 'vlt_entranceTaken' );
       var vlt_firstEntrance = vlt_Get_Cookie ( 'vlt_firstEntrance' );
       var vlt_exitOffer = vlt_Get_Cookie ( 'vlt_exitOffer' );
       if ( !vlt_Get_Cookie( 'vlt_exitTaken' ) && !vlt_Get_Cookie ( 'vlt_entranceTaken' ) && !vlt_Get_Cookie( 'vlt_firstEntrance' ) && ! 
vlt_Get_Cookie( 'vlt_exitOffer' ) ) {
       	var t=setTimeout("vlt_offerExit ()",1000);
       }
     }
     vlt_Set_Cookie( 'vlt_pageViews', vlt_pageViews, '', '/', '', '' );
   }  else {
   	// create cookie and set pageViews to 1
     vlt_Set_Cookie( 'vlt_pageViews', '1', '', '/', '', '' );
     var vlt_pageViews = 1;
   }
   /* END check pageViews */



   /* if it's the first time with an entrance variation, show popup immediately */
   var vlt_entranceVariation = vlt_Get_Cookie ( 'vlt_entranceVariation' );
   var vlt_entranceOffer = vlt_Get_Cookie( 'vlt_entranceOffer' );
   if ( vlt_Get_Cookie( 'vlt_entranceVariation' ) && !vlt_Get_Cookie ( 'vlt_entranceOffer' ) ) {
     vlt_offerEntrance ();
   }



   /* This code block determines if we should listen for exit survey events */
     // check if user hasn't already taken a survey
     // also check if it's there first time with entrance survey which is only shown once
     // finally check if exitOffer was set (from pageViews trigger threshold being crossed)
     if ( !vlt_Get_Cookie( 'vlt_entranceTaken' ) && !vlt_Get_Cookie ( 'vlt_exitTaken' ) && !vlt_Get_Cookie( 'vlt_firstEntrance' ) && ! 
vlt_Get_Cookie( 'vlt_exitOffer' ) ) {
       vlt_listenForExit ();
     }
});