function trim(string) {
			if (!string) {
			    return '';
			}
			return string.replace(/^\s*|\s*$/g,"");
		}
		function setFieldDefaults(field,defaultValue,isfocus) {
			var val = trim(field.value).toLowerCase();
			if (isfocus) {
				field.style.color = '#000000';
				if (val == defaultValue.toLowerCase()) {
					field.value = '';
				}
			}
			else {
				if (val == defaultValue.toLowerCase() || val == '') {
					field.style.color = '#999999';
					field.value = defaultValue;
				}
			}
		}
		function radioCheckBoxes(clickedOne) {
			var checkBoxesIDs = new Array("searchResidential","searchCommercial");
			if (clickedOne.checked == true) {
				var countCheckBoxes = checkBoxesIDs.length;
				for (var i=0; i < countCheckBoxes; i++) {
					currentCheckbox = document.getElementById(checkBoxesIDs[i]);
					if (currentCheckbox != clickedOne) {
						currentCheckbox.checked = false;
					}
				}
			}
		}