function Buscar(form)
{

	var palabrabuscar=form.palabrabuscar.value;
	
	//GOOGLE
	var url="http://www.google.com/search?q="+palabrabuscar+"&hl=es";
	window.open(url,"Google");

	//ASK
	if(form.ask.checked)
		  {var url="http://es.ask.com/web?q="+palabrabuscar+"&qsrc=0&o=312&l=dir&dm=lang";
		  window.open(url,"Ask");}

	//CC
	if(form.cc.checked)
		  {var url="http://www.colectivosdecompras.com/buscador/resultado-busqueda.php?vd=av&q="+palabrabuscar;
		  window.open(url,"Colectivos de Compras");}

	//ALEXA
	if(form.alexa.checked)
		  {var url="http://www.alexa.com/search?q="+palabrabuscar;
		  window.open(url,"Alexa");}
		  
	//MSN
	if(form.msn.checked)
		  {var url="http://search.msn.es/results.asp?CY=es&q="+palabrabuscar;
		  window.open(url,"MSN");}
		  
	//YAHOO
	if(form.yahoo.checked)
		  {var url="http://es.search.yahoo.com/search/es?p="+palabrabuscar;
		  window.open(url,"Yahoo");}
	  
}