function serialize(form){   //esto funcionaa	dar el nobre del fomulario.....   
	   //alert("serializa.....");
	   var n = form.length;
	   var formu=pal="";
	   for(var i=0; i<n;i++){
	      formu="";
		  //alert(form[i].type);
	      if(form[i].type=="radio" || form[i].type=="checkbox" ){
		      if(form[i].checked) formu="&"+form[i].name+"="+form[i].value;
		  }
		  else	formu="&"+form[i].name+"="+form[i].value;	
          
		  if(form[i].type=="text" ||form[i].type=="textarea" || form[i].type=="select" ){
		        formu=form[i].value;
				//formu="&"+form[i].name+"="+formu;
				//while(formu.indexOf(" ")>-1 && formu.indexOf(" ")<formu.length-1)
				//  formu=formu.replace(" ","+");
				  formu="&"+form[i].name+"="+formu;				
		  }
		  pal=pal+formu;
	   }
	   return pal;
	 }
	 
	 
	 function  subb(){
	        $('bolsa').innerHTML="";	 
	 }
	 function enviar(form){
	 	    form_u=form;
	    var query=serialize(form);
	   if( validar(form)==0 ) return;
		$('bolsa').innerHTML="Waiting...";
		new Ajax.Request('compra.php',{
		   method: 'post',
		   parameters:query,
		   onSuccess:function(trans){
		       $('bolsa').innerHTML=trans.responseText;
			  
				setTimeout("subb()", 1*(15*(1000)) );			   
				form_u.reset();
		   }
	   });	 
	 }

	  function validar(form){
	     if( form.nombre.value=="" ) { alert("Ingrese su Nombre"); form.nombre.focus(); return 0;}
		 if (form.email.value == "")
			{ alert("Ingrese su E-mail"); form.email.focus(); return 0; }
  
		if (form.email.value.indexOf('@', 0) == -1 || form.email.value.indexOf('.', 0) == -1)
		{ alert("E-mail incorrecto! "); form.correo.focus(); return 0; }

	   return 1;
	 }