/**************** Static yahooHandler class ****************/ function yahooHandler () {} //Static method to determine if referrer is yahoo yahooHandler.isReferrer = function () { if (document.referrer && document.referrer.indexOf('http://www.yahoo.com/') == 0) { return true; } return false; } //Validate a channel yahooHandler.validateChannel = function (ch) { //Init vars var valid = "www"; //Default to www var valid_channels = new Array ( "auto", "computer", "electronics", "entertainment", "food", "health", "home", "mobiltravelguide", "money", "people", "recipes", "science", "travel", "www", "reference" ); for (var chValue in valid_channels) { if (valid_channels[chValue] == ch) { valid = ch; break; } } return valid; } //Method to couple with isYahooReferred yahooHandler.serveAd = function (adPosition) { var adCode = ''; var client = ''; var googleCode = ''; var googleData = null; switch (adPosition) { case 'Google1': client = 'howstuffworks'; googleData = { google_ad_output : "'js'", google_ad_client : "'howstuffworks_rs_2_js'", google_ad_channel : "ch", google_safe : "'high'", google_max_num_ads : "'3'", google_skip : 3, google_ad_type : "'text'", google_ad_section : "'content'" } adCode = "function google_ad_request_done(ads) { if (google_ads.length == 0) { return; } t = '' + '
' +'
 Ads by Google
' +'
Advertise on this site
'; document.write(t); } var ads = new Array;"; break; case 'Google2': client = 'howstuffworks'; googleData = { google_ad_output : "'js'", google_ad_client : "'howstuffworks_rs_js'", google_ad_channel : "ch", google_safe : "'high'", google_max_num_ads : "'3'", google_skip : 0, google_ad_section : "'content'", google_ad_type : "'text'" } adCode = "function google_ad_request_done(ads) { if (google_ads.length == 0) { return; } t = '
'+'
 Ads by Google
' +'
'; document.write(t); } var ads = new Array;"; break; case 'MedRect': case 'MedRectHome': client = 'ca-howstuffworks_rs_300x250'; googleData = { google_ad_client : "'howstuffworks_rs_300x250'", google_ad_width : 300, google_ad_height : 250, google_ad_format : "'300x250_pas_abgnc'", google_safe : "'high'", google_ad_channel : "ch", google_color_bg : "'FFFFFF'", google_color_border : "'990000'", google_ad_section : "'content'", google_ad_type : "'image_flash'" } break; case 'Tower': client = 'ca-howstuffworks_rs_120x600'; googleData = { google_ad_client : "'ca-howstuffworks_rs_160x600'", google_ad_width : 160, google_ad_height : 600, google_ad_format : "'160x600_pas_abgnc'", google_safe : "'high'", google_ad_channel : "ch", google_color_bg : "'FFFFFF'", google_color_border : "'990000'", google_ad_type : "'image_flash'" } break; case 'TopBanner': case 'TopHome': case 'BotBanner': client = 'ca-howstuffworks_rs_728x90'; googleData = { google_ad_client : "'ca-howstuffworks_rs_728x90'", google_ad_width : 728, google_ad_height : 90, google_ad_format : "'728x90_pas_abgnc'", google_safe : "'high'", google_ad_channel : "ch", google_color_bg : "'FFFFFF'", google_color_border : "'000099'", google_ad_type : "'image_flash'", google_ad_section : "'content'" } break; //Don't display anything. default: return; break; } //Build out google adsense code info. for (var key in googleData) { googleCode += key + " = " + googleData[key] + ";\n"; } //Write google adsense client details and additional ad code. document.write( "" ); //Write js/image inclusion document.write("\n"); document.write( "\n" ); }