// receives url, width, height
// must declase newwindow outside of popup fxn, or it will redeclare when called
var newwindow = '';

function popup(myUrl, myWidth, myHeight) {

  screenWidth = screen.width;
  screenHeight = screen.height;
  myLeft = (screenWidth - myWidth)/2;
  myTop = (screenHeight - myHeight - 60)/2;

  // JS code for focusing on new window from http://www.quirksmode.org/js/croswin.html
  if (!newwindow.closed && newwindow.location) {
	newwindow.location.href = myUrl;
  }
  else {
	newwindow = this.open(myUrl, "Popup", "toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes,width="+myWidth+",height="+myHeight+",screenX="+myLeft+",screenY="+myTop+",left="+myLeft+",top="+myTop);
	if (!newwindow.opener)
	  newwindow.opener = self;
  }
  if (window.focus)
	newwindow.focus()

}

function doClear(theText) {
	if (theText.value == theText.defaultValue) {
        theText.value = ""
    }
}

function validate(myForm) {
	if (myForm.name.value == "") {
		alert ("Please enter your name.")
		myForm.name.focus()
		myForm.name.select()
		return false;
	}
/*	if (myForm.phone.value == "") {
		alert ("Please enter your phone number.")
		myForm.phone.focus()
		myForm.phone.select()
		return false;
	} */
	if ((myForm.email.value == "") || (!verify(myForm.email.value))) {
		alert ("You must enter a valid email address.");
		myForm.email.focus()
		myForm.email.select()
		return false;
	}
	return true;	
}

function validate_email(myForm) {
	if (!verify(myForm.email.value)) {
		alert ("You must enter a valid email address.");
		myForm.email.focus()
		myForm.email.select()
		return false;
	}
	return true;	
}

function verify(email) {
 invalidChars = " /:,;'\""
 if (email == "") {
  return false;
 }

 for (i=0; i<invalidChars.length; i++) {
  badChar = invalidChars.charAt(i)
  if (email.indexOf(badChar,0) > -1) {
   return false;
  }
 }
 atPos = email.indexOf("@",1);
 if (atPos == -1) {
  return false;
 }
 if (email.indexOf("@",atPos+1) > -1) {
    return false;
 }
 periodPos = email.indexOf(".",atPos);
 if (periodPos == -1) {
  return false;
 }
 if (periodPos+3 > email.length) {
  return false;
 }
 return true;
}

// these 4 fxns are for the rollover buttons in the top & bottom navs
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// for swapping the main image in the Portfolio
function swapImg(name){
	var imgName = "images/portfolio/" + name + ".jpg";
	window.document.MainImage.src = imgName;
}