function fillChildren(){
   num = form1.adult.options[form1.adult.selectedIndex].value + form1.rooms.options[form1.rooms.selectedIndex].value + form1.acomodation.options[form1.acomodation.selectedIndex].value;
 switch (num){
        case '314':	           
			   fillSelectChildren('0','0');
			   fillSelectChildren('1','1');		   
	    break;
		default:
			   fillSelectChildren('0','0');
			   fillSelectChildren('1','1');
			   fillSelectChildren('2','2');		   
	    break;		
	  }	  
}