//codigo checar explorador
 <!--

            function MM_checkBrowser(NSvers,NSpass,NSnoPass,IEvers,IEpass,IEnoPass,OBpass,URL,altURL) { //v1.2

              var newURL = '', version = parseFloat(navigator.appVersion);

              if (navigator.appName.indexOf('Netscape') != -1) {

                if (version >= NSvers) {if (NSpass>0) newURL = (NSpass==1)?URL:altURL;}

                else {if (NSnoPass>0) newURL = (NSnoPass==1)?URL:altURL;}

              } else if (navigator.appName.indexOf('Microsoft') != -1) {

                if (version >= IEvers) {if (IEpass>0) newURL = (IEpass==1)?URL:altURL;}

                else {if (IEnoPass>0) newURL = (IEnoPass==1)?URL:altURL;}

              } else if (OBpass>0) newURL = (OBpass==1)?URL:altURL;

              if (newURL) {

                window.location = unescape(newURL);

                document.MM_returnValue = false;

              }

            }

            //-->

 
 //código que llena los select
 
 var RegionsDashes = "--------------"

            var CountriesDashes = "--------------"

            var DefaultLink = "index.htm"

            SubCategory = new Object()

            Links = new Object()

            

            // CONFIGURATION STARTS HERE

            Category = new Array(
			  "Category", 
			  "Arts and Culture", 
			  "Autos", 
			  "Business & Economy",
			  "Education",
			  "Entertainment",
			  "Government",
			  "Health",
			  "News & Media",
			  "Organizations",
			  "Science & Technology",
			  "Society & Culture",
			  "Travel & Tourism");

            SubCategory["Category"] = new Array(
			"Choose an option"
			);
			Links["Category"] = new Array(

            "#");

            SubCategory["Arts and Culture"] = new Array(
			"Choose an option",
			"Cooking",
			"Dance",
			"Fashion Houses",
			"Languages",
			"Museums",
			"Photography",
			"Seven Wonders of the World"
            );

            

            Links["Arts and Culture"] = new Array(

            "response_art.asp?Subcategory=cooking&Tabla=azART",
			 "response_art.asp?Subcategory=dance&Tabla=azART",
			 "response_art.asp?Subcategory=fashion&Tabla=azART",
			 "response_art.asp?Subcategory=language&Tabla=azART",
			 "response_art.asp?Subcategory=museums&Tabla=azART",
			 "response_art.asp?Subcategory=photography&Tabla=azART",
			 "response_art.asp?Subcategory=wonders&Tabla=azART"
			);
            
            SubCategory["Autos"] = new Array(
			"Choose an option",
			"Automobiles",
			"Motorcycles"
			);
			
			Links["Autos"]= new Array(
			"response_art.asp?Subcategory=automobiles&Tabla=azAutos",
			"response_art.asp?Subcategory=motorcycles&Tabla=azAutos"
			);
			
			SubCategory["Business & Economy"] = new Array(
			"Choose an option",
			"Banks",
			"Chambers of Commerce",
			"Department Stores",
			"IT Companies",
			"Search Engines",
			"Online Shopping"
			);
			
			Links["Business & Economy"] = new Array(
			"response_art.asp?Subcategory=banks&Tabla=azBusiness",
			"response_art.asp?Subcategory=chambers&Tabla=azBusiness",
			"response_art.asp?Subcategory=stores&Tabla=azBusiness",
			"response_art.asp?Subcategory=it&Tabla=azBusiness",
			"response_art.asp?Subcategory=search&Tabla=azBusiness",
			"response_art.asp?Subcategory=shopping&Tabla=azBusiness"
			);
			
			SubCategory["Education"] = new Array(
			"Choose an option",
			"Libraries",
			"Universities"
			);
			
			Links["Education"]= new Array(
			"response_art.asp?Subcategory=libraries&Tabla=azEducation",
			"response_art.asp?Subcategory=universities&Tabla=azEducation"
			);
			
			SubCategory["Entertainment"]=new Array(
			"Choose an option",
			"Amusement & Theme Parks",
			"Theatre",
			"Cartoon Characters",
			"Circus",
			"Magicians",
			"Movies",
			"Music Band & Singers"
			);
			
			Links["Entertainment"]=new Array(
			"response_art.asp?Subcategory=amusement&Tabla=azEntertainment",
			"response_art.asp?Subcategory=theatre&Tabla=azEntertainment",
			"response_art.asp?Subcategory=cartoon&Tabla=azEntertainment",
			"response_art.asp?Subcategory=Circus&Tabla=azEntertainment",
			"response_art.asp?Subcategory=Magician&Tabla=azEntertainment",
			"response_art.asp?Subcategory=Movies&Tabla=azEntertainment",
			"response_art.asp?Subcategory=Music&Tabla=azEntertainment"
			);
			
			SubCategory["Government"]=new Array(
			"Choose an option",
			"Cities",
			"Countries",
			"Judiciary",
			"Military",
			"Departments of U.S."
			);
			
			Links["Government"]=new Array(
			"response_art.asp?Subcategory=cities&Tabla=azGovernment",
			"response_art.asp?Subcategory=countries&Tabla=azGovernment",
			"response_art.asp?Subcategory=judiciary&Tabla=azGovernment",
			"response_art.asp?Subcategory=military&Tabla=azGovernment",
			"response_art.asp?Subcategory=departments&Tabla=azGovernment"
			);
			
			SubCategory["Health"]=new Array(
			"Choose an option",
			"Children's Health",
			"Hospitals"
             );
			 
			 Links["Health"]=new Array(
			 "response_art.asp?Subcategory=children&Tabla=azHealth",
			 "response_art.asp?Subcategory=hospitals&Tabla=azHealth"
			 );
			 
			 SubCategory["News & Media"]=new Array(
			 "Choose an option",
			 "Publications",
			 "Radio Stations",
			 "Television"
			 );
			 
			 Links["News & Media"]=new Array(
			 "response_art.asp?Subcategory=publications&Tabla=azNews",
			 "response_art.asp?Subcategory=radio&Tabla=azNews",
			 "response_art.asp?Subcategory=television&Tabla=azNews"
			 );
            
			SubCategory["Organizations"]=new Array(
			 "Choose an option",
			 "International Organizations",
			 "NGO's",
			 "Sports Federations",
			 "United Nations Organizations",
			 "Wild Life Associations"
			 );
			
			Links["Organizations"]=new Array(
			"response_art.asp?Subcategory=international&Tabla=azOrg",
			"response_art.asp?Subcategory=ngo&Tabla=azOrg",
		    "response_art.asp?Subcategory=sports&Tabla=azOrg",
			"response_art.asp?Subcategory=united&Tabla=azOrg",
			"response_art.asp?Subcategory=wild&Tabla=azOrg"
			);
			
			SubCategory["Science & Technology"]=new Array(
			 "Choose an option",
			 "Archaelogy",
			 "Astronomy",
			 "Observatories",
			 "Research Centers"
			 );
			 
			 Links["Science & Technology"]=new Array(
			"response_art.asp?Subcategory=archaelogy&Tabla=azScience",
			"response_art.asp?Subcategory=astronomy&Tabla=azScience",
			"response_art.asp?Subcategory=observatories&Tabla=azScience",
			"response_art.asp?Subcategory=research&Tabla=azScience"
			);
			
			SubCategory["Society & Culture"]=new Array(
			 "Choose an option",
			 "Awards",
			 "Festivals",
			 "Political Parties",
			 "Religions",
			 "Wars of the World",
			 "World Personalities"
			 );
			 
			 Links["Society & Culture"]=new Array(
			 "response_art.asp?Subcategory=awards&Tabla=azSociety",
			 "response_art.asp?Subcategory=festivals&Tabla=azSociety",
			 "response_art.asp?Subcategory=political&Tabla=azSociety",
			 "response_art.asp?Subcategory=religions&Tabla=azSociety",
			 "response_art.asp?Subcategory=wars&Tabla=azSociety",
			 "response_art.asp?Subcategory=worldperson&Tabla=azSociety"
			 );
			 
			 SubCategory["Travel & Tourism"]=new Array(
			 "Choose an option",
			 "Airlines",
			 "Airports",
			 "Currencies",
			 "Hotels",
			 "Railways",
			 "Seaports",
			 "Tourism"
			 );
			 
			 Links["Travel & Tourism"]=new Array(
			 "response_art.asp?Subcategory=airlines&Tabla=azTravel",
			 "response_art.asp?Subcategory=airports&Tabla=azTravel",
			 "response_art.asp?Subcategory=currencies&Tabla=azTravel",
			 "response_art.asp?Subcategory=hotels&Tabla=azTravel",
			 "response_art.asp?Subcategory=railways&Tabla=azTravel",
			 "response_art.asp?Subcategory=seaports&Tabla=azTravel",
			 "response_art.asp?Subcategory=tourism&Tabla=azTravel"
			 );
			 
			
			
			
			
			
            // CONFIGURATION ENDS HERE

            initializeForm()

            function initializeForm () {

            	// Fill up initial option values

            	document.jump.region.length = 0;

            	Category[Category.length] = RegionsDashes

            	document.jump.region.options[0] = new Option(Category[0],"",1,1)

            	for(count = 1; count < Category.length; count++) {

            		document.jump.region.options[count] = new Option(Category[count], "")

            	}

            fillCountry()

            }

            

            function fillCountry()

            {

            	document.jump.country.length = 0;

            	reg = new String(Category[document.jump.region.selectedIndex])

            	if (reg == RegionsDashes) {

            		document.jump.region.selectedIndex = document.jump.region.selectedIndex - 1

            		reg = new String(Category[document.jump.region.selectedIndex])

            	}

            	document.jump.country.options[0] = new Option(SubCategory[reg][0],Links[reg][0],1,1);

            	for(count = 1; count < Links[reg].length+1; count ++)

            	document.jump.country.options[count] = new Option(SubCategory[reg][count],Links[reg][count]);

            	document.jump.country.options[document.jump.country.options.length] = new Option(CountriesDashes,DefaultLink);

            }

            function checkCountry() {

            	if (document.jump.country.options[document.jump.country.selectedIndex].text == CountriesDashes)

            		document.jump.country.selectedIndex = document.jump.country.selectedIndex - 1;
					
					window.open(document.jump.country.options[document.jump.country.selectedIndex-1].value,"_self")					

            }