function isNumeric(e) {
  if (e.keyCode) kCode = e.keyCode;
  else if (e.which) kCode = e.which;
  
  // allow backspace, tab, left arrow, right arrow, insert and delete
  if (kCode == 8 || kCode == 9 || kCode == 37 || kCode == 39 || kCode == 45 || kCode == 46) {
    return true;
  }

  // allow numeric keys
  if (kCode >= 48 && kCode <= 57) {
    return true;
  }
  
  return false;
}

function isValidEmail(anEmailField) {
  return (anEmailField.indexOf(".") > 2) && (anEmailField.indexOf("@") > 0);
}

function isEmpty(aTextField) {
  if (aTextField.value == "" || aTextField.value == null || aTextField.value.length==0) {
    return true;
  }
  else { 
    return false; 
  }
}

var currentYear;

function displayDate() {
  var dayArray=new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
  var monthArray=new Array("January","February","March","April","May","June","July","August","September","October","November","December");
  var d=new Date();
  document.write(dayArray[d.getDay()] + ", ");
  document.write(d.getDate() + " ");
  document.write(monthArray[d.getMonth()] + " ");
  currentYear = d.getFullYear();
  document.write(currentYear);
}

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];}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}

function addBookmark(bookmarkUrl,bookmarkTitle) {
  if (document.all) {
    window.external.AddFavorite(bookmarkUrl,bookmarkTitle);
	}
}

function setHome(theDoc, theLoc) {
  if (document.all) {
    theDoc.style.behavior='url(#default#homepage)';
    theDoc.setHomePage(theLoc);
	}
}

var texts = new Array(
"<font size='3' color='{COLOR}' face='Verdana'><b>London's Premier Engravers</b></font>",
"<font size='3' color='{COLOR}' face='Verdana'><b>London's Premier Engravers</b></font>",
"<font size='3' color='{COLOR}' face='Verdana'><b>London's Premier Engravers</b></font>"); 
var bgcolor = "#FFFFFF"; 
var fcolor = "#666666"; 
var steps = 20; 
var show = 500; 
var sleep = 30; 
var loop = true; 
var colors = new Array(steps);
getFadeColors(bgcolor,fcolor,colors);
var color = 0;
var text = 0;
var step = 1; 

function fade() { 

var text_out = texts[text].replace("{COLOR}", colors[color]); 
if (document.all) fader.innerHTML = text_out; 
if (document.layers) { document.fader.document.write(text_out); document.fader.document.close(); } 

color += step; 

if (color >= colors.length-1) {
step = -1; 

if (!loop && text >= texts.length-1) return; 
} 

if (color == 0) {
step = 1; 

text += 1;
if (text == texts.length) text = 0; 
} 

setTimeout("fade()", (color == colors.length-2 && step == -1) ? show : ((color == 1 && step == 1) ? sleep : 50));
} 

function getFadeColors(ColorA, ColorB, Colors) {
  len = Colors.length; 

  if (ColorA.charAt(0)=='#') ColorA = ColorA.substring(1);
  if (ColorB.charAt(0)=='#') ColorB = ColorB.substring(1); 

  var r = HexToInt(ColorA.substring(0,2));
  var g = HexToInt(ColorA.substring(2,4));
  var b = HexToInt(ColorA.substring(4,6));
  var r2 = HexToInt(ColorB.substring(0,2));
  var g2 = HexToInt(ColorB.substring(2,4));
  var b2 = HexToInt(ColorB.substring(4,6)); 

  var rStep = Math.round((r2 - r) / len);
  var gStep = Math.round((g2 - g) / len);
  var bStep = Math.round((b2 - b) / len); 

  for (i = 0; i < len-1; i++) {
    Colors[i] = "#" + IntToHex(r) + IntToHex(g) + IntToHex(b);
    r += rStep;
    g += gStep;
    b += bStep;
  }
  Colors[len-1] = ColorB;
} 

function IntToHex(n) {
  var result = n.toString(16);
  if (result.length==1) result = "0"+result;
  return result;
} 

function HexToInt(hex) {
  return parseInt(hex, 16);
} 

function showDisplays(e) {
//  browser_version= parseInt(navigator.appVersion);
//  browser_type = navigator.appName;
  var evtobj=window.event? event : e;
  if (evtobj.ctrlKey && evtobj.altKey) {
      window.location="db/displayContact.php";
  }
}