function showfields(whichfields){
        if(whichfields == "1"){
            //display residential fields
            document.getElementById('beds').style.display = '';
            document.getElementById('baths').style.display = '';
            document.getElementById('acreage').style.display = 'none';
            document.getElementById('sqft').style.display = '';
            document.getElementById('num_acreage').value = '';
        }else if(whichfields == "2"){
            //display commerical fields
            document.getElementById('beds').style.display = 'none';
            document.getElementById('baths').style.display = 'none';
            document.getElementById('acreage').style.display = 'none';
            document.getElementById('sqft').style.display = '';
            document.getElementById('num_bedrooms').value = '';
            document.getElementById('num_baths').value = '';
            document.getElementById('num_acreage').value = '';
            document.getElementById('foreclosures').checked = false;
        }else if(whichfields == "3"){
            //display lots and land fields
            document.getElementById('beds').style.display = 'none';
            document.getElementById('baths').style.display = 'none';
            document.getElementById('acreage').style.display = '';
            document.getElementById('sqft').style.display = 'none';
            document.getElementById('num_bedrooms').value = '';
            document.getElementById('num_baths').value = '';
            document.getElementById('num_tot_heat_sqft').value = '';
            document.getElementById('foreclosures').checked = false;
        }
    }