function r_on(i) {
  if (document.images) { 
    if (document[i].src.indexOf("down") < 0) {
      document[i].src = "/images/" + i + "_over.gif"; 
    }
  }
}

function r_off(i) {
  if (document.images) { 
    if (document[i].src.indexOf("down") < 0) {
      document[i].src = "/images/" + i + ".gif"; 
    }
  }
}

function s_on(i) {
  if (document.images) { 
    if (document[i].src.indexOf("down") < 0) {
      document[i].src = "images/" + i + "_over.gif"; 
    }
  }
}

function s_off(i) {
  if (document.images) { 
    if (document[i].src.indexOf("down") < 0) {
      document[i].src = "images/" + i + ".gif"; 
    }
  }
}

function writeDate() {
  var today = new Date();
  var year = today.getFullYear();
  document.write(year);
}

function leaveSite(site) {
  if (confirm('You are now leaving the Leo R. McCafferty M.D., F.A.C.S. web site.\nIf you do not wish to leave this site, click Cancel. Click OK to leave.') == 1) {
    window.open(site, 'Untitled','toolbar=yes,width=750,height=500,directories=no,status=no,scrollbars=yes,resizable=yes,menubar=yes')
  }
}

function popUp(page) {
  popup_window = window.open(page,'popup','location,menubar,resizable,scrollbars,status,toolbar,width=500,height=300');
}

function formrule(field)
{
	if (field.defaultValue == field.value) field.value = "";
}

function formrule2(field) {
  if (field.value == "") {
    field.value = field.defaultValue;
  }
}

function FormSubmit(frm) {		// validate form1
	if (document.form1.name.value=='') {
		alert('Please enter name');
		document.form1.name.focus()
		return false;
	}
	// check to see if email address field is of valid syntax
	substremail = document.form1.email.value.split("@")
	if (substremail.length > 1)
	{
		index = substremail[1].indexOf(".")
		if (index == -1)
 		{
		alert("Please enter a valid e-mail address")
		document.form1.email.focus()
		return false
		}
	}
	else {
		alert("Please enter a valid e-mail address")
		document.form1.email.focus()
		return false
	}
	if (document.form1.phone.value=='') {
		alert('Please enter phone number');
		document.form1.phone.focus()
		return false;
	}
//	document.form1.name.value = document.form1.fname.value + ' ' + document.form1.name.value
	return true;
}