function checkpricerange(){
 form=document.getElementById('SearchForm');
 bot=document.getElementById('startprice');
 top=document.getElementById('topprice');
 if( (bot.options[bot.selectedIndex].value==0) || (top.options[top.selectedIndex].value==0) ){
  form.submit();
  return;
 };
 if(bot.options[bot.selectedIndex].value>=top.options[top.selectedIndex].value) {
  alert('Invalid Price Range Selection');
  return;
 } else {
  form.submit();
  return;
 };
};