var CONTENT_WIDTH = 650;
  	 var CONTENT_HEIGHT = 840;
     var loadingImage = 'loading.gif';
     var bodyLayer    = null;
     var emailFriendOverlayLayer = null;
     var emailFriendLayer = null;
     var BASE_PAGE = "/email_friend";
     var emailFriendAjaxInstance = new AjaxObject();
 
     var emailFriendOverlayTop = ( ( browser.getWindowHeight() - 35 - CONTENT_HEIGHT ) / 2 );
     if ( emailFriendOverlayTop < 0 ) {
     	emailFriendOverlayTop = 20;
     }
     var emailFriendOverlayLeft = ( ( browser.getWindowWidth() - 20 - CONTENT_WIDTH ) / 2 );

     function initFriendOverlayLayers() {
        bodyLayer = document.getElementsByTagName( "body" ).item( 0 );
        //alert( bodyLayer.id );
        emailFriendOverlayLayer = document.createElement( "div" );
        emailFriendOverlayLayer.setAttribute( 'id', 'emailFriendOverlayLayer' );
        emailFriendOverlayLayer.onclick = function() { hideOverlay(); };
        emailFriendOverlayLayer.style.position = 'absolute';
        emailFriendOverlayLayer.style.visibility = "hidden";
        emailFriendOverlayLayer.style.height = ( browser.getPageHeight() + 'px');
        emailFriendOverlayLayer.style.top = '-5px';
        emailFriendOverlayLayer.style.left = '0px';
        emailFriendOverlayLayer.style.zIndex = '100';
        emailFriendOverlayLayer.style.width = '100%';

        bodyLayer.insertBefore( emailFriendOverlayLayer, bodyLayer.firstChild );

        emailFriendLayer = document.createElement( "div" );
        emailFriendLayer.setAttribute( 'id', 'emailFriendLayer' );
        emailFriendLayer.style.position = 'absolute';
        emailFriendLayer.style.visibility = "hidden";
        emailFriendLayer.style.top = emailFriendOverlayTop + 'px';
        emailFriendLayer.style.left = emailFriendOverlayLeft + 'px';
        emailFriendLayer.style.zIndex = '200';
        emailFriendLayer.style.width = CONTENT_WIDTH + 'px';
        emailFriendLayer.style.height = CONTENT_HEIGHT + 'px';

        //emailFriendOverlayLayer.appendChild( emailFriendLayer );
        bodyLayer.insertBefore( emailFriendLayer, bodyLayer.firstChild );
     }

			 var initialParams = "";
			 
     function showOverlay( initialParams ) {
        browser.hideSelects();
        initFriendOverlayLayers();
           
        emailFriendAjaxInstance = null;
        emailFriendAjaxInstance = new AjaxObject();
        emailFriendAjaxInstance.intializeConnection();
           
        emailFriendAjaxInstance.setUrl( BASE_PAGE );
        emailFriendAjaxInstance.setWriteToLayer( "emailFriendLayer" );
        emailFriendAjaxInstance.setUrlParams( initialParams );
        emailFriendAjaxInstance.xmlhttpPost();

        browser.changeAttribute( "flash_player", "visibility", "hidden" );
        emailFriendOverlayLayer.style.visibility = "visible";
        emailFriendLayer.style.visibility = "visible";
     }

    function hideOverlay() {
      browser.showSelects();

      emailFriendOverlayLayer.style.visibility = "hidden";
      emailFriendLayer.style.visibility = "hidden";
      browser.changeAttribute( "flash_player", "visibility", "visible" );

      emailFriendAjaxInstance.flush();
    }
    
    function submitEmailFriendForm( formRef ) {
			var formObj = new FormClass();
			formObj.setForm( formRef );
			formObj.init();
			
        emailFriendAjaxInstance.setParams( formObj.getQueryString() + "&mail.x=100-Send&mail.y=100-Send" );
        emailFriendAjaxInstance.xmlhttpPost();
    }
    
    function previewEmailFriendForm( formRef ) {
			var formObj = new FormClass();
			formObj.setForm( formRef );
			formObj.init();
			
        emailFriendAjaxInstance.setParams( formObj.getQueryString() + "&preview.x=100-Preview&preview.y=100-Preview" );
        emailFriendAjaxInstance.xmlhttpPost();
    }