var selects=[];
 selects['yyy']=new Array(new Option('-价格-','yyy'));
 selects['0']=new Array(
 new Option('500元以下','500'), 
 new Option('500-800元','500-800'), 
 new Option('800-1000元','800-1000'), 
 new Option('1000-1200元','1000-1200'), 
 new Option('1200-1500元','1200-1500'), 
 new Option('1500-2000元','1500-2000'), 
 new Option('2000-2500元','2000-2500'), 
 new Option('2500-3000元','2500-3000'), 
 new Option('3000-4000元','3000-4000'), 
 new Option('4000-5000元','4000-5000'), 
 new Option('5000元以上','5000'));
 
 selects['1']=new Array(
 new Option('30万元以下','30'), 
 new Option('30-40万元','30-40'), 
 new Option('40-50万元','40-50'), 
 new Option('50-60万元','50-60'), 
 new Option('60-80万元','60-80'), 
 new Option('80-100万元','80-100'), 
 new Option('100-150万元','100-150'), 
 new Option('150-200万元','150-200'), 
 new Option('200万元以上','200'));
 
<!--//////////JavaScript控制联动///////////-->
function chsel(){
 with (document.ss){
   if(ch.value!="yyy") {
  jg.options.length=0;
  jg.add(selects['yyy'][0]);
  for(var i=0;i<selects[ch.value].length;i++){
    jg.add(selects[ch.value][i]);
   }
  }
 }
 }
 
 function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}