function isPhone(field_id) {
	var max = 999999999;
	var field = eval(doc + field_id + doc2);
	
	var error_msg = eval(doc + field_id + '_error_msg' + doc2);
	var error_field = eval(doc + field_id + '_field_error' + doc2);
	var error_msg_txt = eval(doc + field_id + '_field_error_msg' + doc2);
	var required_field = eval(doc + field_id + '_required' + doc2);	

	//if (required_field.value == "Y") {
		if (Math.ceil(field.value) != Math.floor(field.value) ) {
			  var objRegExp  = /^\d{3}\-\d{4}$/;
			
			if (!objRegExp.test(field.value)) {
				error_msg.innerHTML = "Invalid Phone Number";
				error_field.value = "Y";			
			}  else if ((!field.value || field.value.replace(/ /gi, "").length == 0) && required_field.value == "Y") {
				error_msg.innerHTML = error_msg_txt.value;
				
				error_field.value = "Y";
				
				field.value = "";
			} else {
				error_msg.innerHTML = "";
		
				error_field.value = "N";
			}
		} else {
			if (field.value > max) {
				error_msg.innerHTML = " value</i> &lt; 8 Digits";
				error_field.value = "Y";
			}  else if ((!field.value || field.value.replace(/ /gi, "").length == 0) && required_field.value == "Y") {
				
				error_msg.innerHTML = error_msg_txt.value;
				error_field.value = "Y";
				field.value = "";
			} else {
				error_msg.innerHTML = "";
				error_field.value = "N";
			}
		}

	//}
}