function startEngine() {
    search = document.searchForm.txtsearch.value;
    if (search != "") {
        engine = document.searchForm.wichEngine.selectedIndex + 1;
        finalString = "";
        if (engine == 1) {
            finalString = "http://www.altavista.digital.com/cgi-bin/query?pg=q&what=web&q=" + search;
        }
        if (engine == 2) {
            finalString = "http://search.yahoo.com/search?p=" + search;
        }
        if (engine == 3) {
            finalString = "http://www.excite.com/search.gw?search=" + search;
        }
        if (engine == 4) {
            finalString = "http://www.hotbot.com/?MT=" + search + "&DC=20";
        }
        if (engine == 5) {
            finalString = "http://guide-p.infoseek.com/Titles/?qt=" + search;
        }
        if (engine == 6) {
            finalString = "http://www.lycos.com/cgi-bin/pursuit?adv=%26adv%3B&cat=lycos&matchmode=and&query=" + search + "&x=45&y=11";
        }
        if (engine == 7) {
            finalString = "http://it.search.yahoo.com/search/it?p=" + search;
        }
        if (engine == 8) {
            finalString = "http://search.virgilio.it/virgilio/owa/v3.search?qs=" + search;
        }
        if (engine == 9) {
            finalString = "http://www.arianna.it/abin/newsearch.epl?startfrom=1&maxhits=10&query=" + search
        }
        if (engine == 10) {
            finalString = "http://www.webcrawler.com/cgi-bin/WebQuery?searchText=" + search + "&maxHits=20"
        }
        if (engine == 11) {
            finalString = "http://www.shinyseek.it/cgi-bin/shinyseek?MODE=FIND&KEY=" + search
        }
        location.href =finalString;
	  } else {
	     window.status="Inserire una parola di ricerca";
	  }
}

function gotourl(i){
	if (i == 1) {
		window.history.back();
	} else {
		window.history.forward();
	}
}