//--------------------------------------------------------------------------------------------------
// JavaScript functions                                                                             
//--------------------------------------------------------------------------------------------------
// website:
// www.mamiawamura.com
//--------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------
// INDEX.HTML - This function checks the IE browser version. We need at least MSIE 7.0
//--------------------------------------------------------------------------------------------------
function detectBrowser(){
  // Define Variables
  var sUserAgent = navigator.userAgent;
  //alert ("Browser's user agent header: " + sUserAgent);
  
  var fAppVersion = parseFloat(navigator.appVersion);
  //alert ("Browser Version: " + fAppVersion);

  // Check if browser is Opera, as it has the same value for compatible and MSIE  
  var isOpera = sUserAgent.indexOf("Opera") > -1;
  //alert ("Is Opera: " + isOpera);
  if(isOpera) {
    return;
  }
  
  // Check if browser is MSIE
  var isIE = sUserAgent.indexOf("compatible") > -1 && sUserAgent.indexOf("MSIE") > -1 && !isOpera;
  //alert ("Is MSIE: " + isIE);
  // Compare browser
  if (isIE) {
    // Define variables for different IE versions
    var isMinIE7 = false;
    
    var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
    reIE.test(sUserAgent);
    var fIEVersion = parseFloat(RegExp["$1"]);
    
    isMinIE7 = fIEVersion >= 7.0;
    if(isMinIE7) {
      return;
    }
    else {
      alert ("To view this site properly, you need IE7 or higher. You can download a new version from: http://www.microsoft.com/windows/downloads/ie/getitnow.mspx .");
      return;
    }
  }
  return;
}


/*--------------------------------------------------------------------------------------------------*/
/* Display of the enlarged images from Editorial pages
/*--------------------------------------------------------------------------------------------------*/
function displayEnlargedImage(image_number){
  var source_url = "images/editorial/mamiawamura-editorial_" + image_number + ".gif";
  var enlarged_image = document.getElementById("enlargedImage");
  enlarged_image.src = source_url;
}

/*--------------------------------------------------------------------------------------------------*/
/* Display of the enlarged images from Logo page
/*--------------------------------------------------------------------------------------------------*/
function displayEnlargedImage1(image_id, text_description ){
  var source_url = "images/logos/mamiawamura-logos_03" + image_id + ".gif";
  var enlarged_image = document.getElementById("enlargedImage");
  var source_url_1 = "images/logos/logos_" + text_description + "_text.gif";
  var text_image = document.getElementById("logosTextDescription");
  enlarged_image.src = source_url;
  text_image.src = source_url_1;
}

/*--------------------------------------------------------------------------------------------------*/
/* Display of the enlarged images from Letterhead page
/*--------------------------------------------------------------------------------------------------*/
function displayEnlargedImage2(image_id, text_description ){
  var source_url = "images/letterhead/mamiawamura-letterhead_03" + image_id + ".gif";
  var enlarged_image = document.getElementById("enlargedImage");
  var source_url_1 = "images/letterhead/letterhead_" + text_description + "_text.gif";
  var text_image = document.getElementById("letterheadTextDescription");
  enlarged_image.src = source_url;
  text_image.src = source_url_1;
}

/*--------------------------------------------------------------------------------------------------*/
/* Display of the enlarged images from Letterhead page
/*--------------------------------------------------------------------------------------------------*/
function displayEnlargedImage3(image_id, text_description ){
  var source_url = "images/invitations/mamiawamura-invite_03" + image_id + ".gif";
  var enlarged_image = document.getElementById("enlargedImage");
  var source_url_1 = "images/invitations/invite_" + text_description + "_text.gif";
  var text_image = document.getElementById("invitationsTextDescription");
  enlarged_image.src = source_url;
  text_image.src = source_url_1;
}