function tabs(ele){
	var el = document.getElementById(ele);
	document.getElementById('photos-tab').style.display = 'none';
	document.getElementById('videos-tab').style.display = 'none';
	el.style.display = 'block';
}

function tabs2(ele){
	var el = document.getElementById(ele);
	el.style.display = 'none';
}

function validate_email(field)
{
with (field)
  {
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {return false;}
  else {return true;}
  }
}

sfHover = function() {
	var mylist = document.getElementById("topnav_ul");
	var sfEls = mylist.getElementsByTagName("li");
	
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}

}
function set_text_input(mstate,mval){
	if ( mstate == 'blur' ) {
		if ( mval.value == '' ) {
			mval.value = 'Enter Your Email Address';
		}
	}
	if ( mstate == 'focus' ) {
		if ( mval.value == 'Enter Your Email Address' ) {
			mval.value = '';
		}
	}
}
function chk_frm(frm){
		apos=frm.email_input.value.indexOf("@");
		dotpos=frm.email_input.value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) {
			alert('Please enter a valid email address.');
			return false;
		}

		if (!frm.en.checked && !frm.sr.checked && !frm.we.checked) {
			alert('Please choose at least one eNewsletter to receive.');
			return false;
		}
}
//if (window.attachEvent) window.attachEvent("onload", sfHover);
window.onload=sfHover;