function popWin(w,h,pageUrl,scrollbar){
 newWind=window.open
   (pageUrl,"newWindow","status=no,toolbar=no,scrollbars=no,background-color='#000',width="+w+",height="+h+",top=100,left=100")
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;


nav1_on = new Image();
nav1_off = new Image();
nav2_on = new Image();
nav2_off = new Image();
nav3_on = new Image();
nav3_off = new Image();
nav4_on = new Image();
nav4_off = new Image();
nav5_on = new Image();
nav5_off = new Image();

nav1_on.src = "images/nav1_on.gif";
nav1_off.src ="images/nav1.gif";
nav2_on.src = "images/nav2_on.gif";
nav2_off.src ="images/nav2.gif";
nav3_on.src = "images/nav3_on.gif";
nav3_off.src ="images/nav3.gif";
nav4_on.src = "images/nav4_on.gif";
nav4_off.src ="images/nav4.gif";
nav5_on.src = "images/nav5_on.gif";
nav5_off.src ="images/nav5.gif";

rnav1_off = new Image();
rnav1_on= new Image();
rnav2_off = new Image();
rnav2_on= new Image();
rnav3_off = new Image();
rnav3_on= new Image();
rnav4_off = new Image();
rnav4_on= new Image();
rnav5_off = new Image();
rnav5_on= new Image();
rnav6_off = new Image();
rnav6_on= new Image();

rnav1_off.src = "images/rnav1.gif";
rnav1_on.src = "images/rnav1_on.gif";
rnav2_off.src = "images/rnav2.gif";
rnav2_on.src = "images/rnav2_on.gif";
rnav3_off.src = "images/rnav3.gif";
rnav3_on.src = "images/rnav3_on.gif";
rnav4_off.src = "images/rnav4.gif";
rnav4_on.src = "images/rnav4_on.gif";
rnav5_off.src = "images/rnav5.gif";
rnav5_on.src = "images/rnav5_on.gif";
rnav6_off.src = "images/rnav6.gif";
rnav6_on.src = "images/rnav6_on.gif";

tnav1_off = new Image();
tnav1_on= new Image();
tnav2_off = new Image();
tnav2_on= new Image();
tnav3_off = new Image();
tnav3_on= new Image();
tnav4_off = new Image();
tnav4_on= new Image();
tnav5_off = new Image();
tnav5_on= new Image();

tnav1_off.src = "images/2nav1.gif";
tnav1_on.src = "images/2nav1_on.gif";
tnav2_off.src = "images/2nav2.gif";
tnav2_on.src = "images/2nav2_on.gif";
tnav3_off.src = "images/2nav3.gif";
tnav3_on.src = "images/2nav3_on.gif";
tnav4_off.src = "images/2nav4.gif";
tnav4_on.src = "images/2nav4_on.gif";
tnav5_off.src = "images/2nav5.gif";
tnav5_on.src = "images/2nav5_on.gif";

function roll(sname,rname){
    sname.src = rname.src;
}

function signup_validate(f) {
	var AtSym = f.elements.email.value.indexOf('@')
	var dot = f.elements.email.value.lastIndexOf('.')
	var space = f.elements.email.value.indexOf(' ')
	var length = f.elements.email.value.length

	if ((AtSym < 1 ) ||   // '@' can't be first
    	 (dot <= AtSym +1 ) || //one char between '@' and '.'
	     (dot == length - 1 ) ||  //one char after '.'
	     (space  != -1))  //no spaces allowed
	   {
	    alert("Please enter a valid e-mail address");
	    return false;
	   }

	if (f.elements.email == '') {
		alert('Please provide a valid e-mail address.');
		return false;
	}

	f.submit();

}

function selectRadio(name, val){
	e = document.contact_us.elements[name];
	for(i = 0; i < e.length; i++){
		if(e[i].value == val)
			e[i].checked = true;
	}
}