function buscar() {
	var pesquisa = document.frmbuscar.pesquisa.value;
	var opcao = document.frmbuscar.busca;
	var tmpstr = "";
	
	for ( ind=0; ind < pesquisa.length ; ind++ ){
		if ( pesquisa.charAt(ind) == ' ' ){
			tmpstr = tmpstr + '+';
		}
		else{
			tmpstr = tmpstr + pesquisa.charAt(ind);
		}
	}
	
	pesquisa=tmpstr;
	
	if ( pesquisa==""){
		alert("Insira uma palavra para pesquisar" );
		return false;
	}
	else
	{
		if (opcao[0].checked){
			nw=window.open("http://www.radix.com.br/busca/consultaBR?exp="+pesquisa+"&target1=0&target2=0&pas=10&tip=0&all=ON","wd");
			nw.focus();
		}
		if (opcao[1].checked){
			nw=window.open("http://busca.cade.com.br/scripts/engine.exe?p2=1&p3=1&p1="+pesquisa+"","wd");
			nw.focus();
		}
		if (opcao[2].checked){
			nw=window.open("http://www.aonde.com/cgi/consulta.cgi?keys="+pesquisa+"&search_type=and&I3.x=13&I3.y=17","wd");
			nw.focus();
		}
		if (opcao[3].checked){
			nw=window.open("http://www.radaruol.com.br/index.asp?MT="+pesquisa+"&SM=MC&LG=any&DC=10&RG=.br&_v=2&act.search.x=19&act.search.y=8","wd");
			nw.focus();
		}
		if (opcao[4].checked){
			nw=window.open("http://www.todobr.com.br/cgi-bin/query.cgi?query="+pesquisa+"&estado=255&and_or=0&items_per_page=10&x=37&y=3","wd");
			nw.focus();
		}
		if (opcao[5].checked){
			nw=window.open("http://miner.bol.com.br:8000/metaminerbot.html?lang=port&it=on&br=on&t=30&q="+pesquisa+"&","wd");
			nw.focus();
		}
		if (opcao[6].checked){
			nw=window.open("http://search.br.altavista.com/cgi-bin/query?pg=q&sc=on&q="+pesquisa+"&kl=XX&what=br&search.x=6&search.y=14","wd");
			nw.focus();
		}
		if (opcao[7].checked){
			nw=window.open("http://busca.zeek.com.br/busca/busca.cfm?p="+pesquisa+"","wd");
			nw.focus();
		}
		if (opcao[8].checked){
			nw=window.open("http://busca.brujula.cl/cgi-ps/ps_query1.cgi?query="+pesquisa+"&country=CL&tipo=e&franq=010&countries=BRARELPYPECLCOMXVE&ch=on&ar=on&br=on&co=on&me=on&pa=on&to=on&buscar.x=36&buscar.y=23","wd");
			nw.focus();
		}
		return false;
	}
}