// overly simplistic test for IE
isIE = (document.all ? true : false);
// both IE5 and NS6 are DOM-compliant (well, sort of...)
isDOM = (document.getElementById ? true : false);
function fixPosition(divname) {
 divstyle = getDivStyle(divname);
 positionerImgName = divname + 'Pos';
 // hint: try setting isPlacedUnder to false
 isPlacedUnder = true;
 if (isPlacedUnder) {
  setPosition(divstyle,positionerImgName,true);
 } else {
  setPosition(divstyle,positionerImgName)
 }
}
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;
}
// fixPositions() puts everything back in the right place after a resize.
function fixPositions()
{
 // add a fixPosition call here for every element
 // you think might get stranded in a resize/reflow.
 fixPosition('TherapiesMenu');

}


// get the true offset of anything on NS4, IE4/5 & NS6, even if it's in a table!
function getAbsX(elt) { 
//return (elt.x) ? elt.x : getAbsPos(elt,"Left"); 
//alert(elt.offsetParent.offsetLeft);
return(findPosX(elt));
}

function getAbsY(elt) { 
return (elt.y) ? elt.y : findPosY(elt,"Top"); }

function findPosX(obj)
  {
    var curleft = 0;
    if(obj.offsetParent)
        while(1) 
        {

          curleft += obj.offsetLeft;
          if(!obj.offsetParent)
            break;
          obj = obj.offsetParent;
        }
    else if(obj.x)
        curleft += obj.x;
    return curleft;
  }

  function findPosY(obj)
  {
    var curtop = 0;
    if(obj.offsetParent)
        while(1)
        {
          curtop += obj.offsetTop;
          if(!obj.offsetParent)
            break;
          obj = obj.offsetParent;
        }
    else if(obj.y)
        curtop += obj.y;
    return curtop;
  }

// 18th August 2008 by AD
// old way of doing it. Replaced with findPosX & findPosY functions
// from what I can gather, the line elt["offset" + which] was causing issues in firefox

function getAbsPos(elt,which) {
 iPos = 0;
 while (elt != null) {
 iPos += elt["offset" + which];
 elt = elt.offsetParent;
//iPos += eval("elt.offsetParent.offset"+which);
 }

 return iPos;
}


function getDivStyle(divname) {
 var style;
 if (isDOM) { style = document.getElementById(divname).style; }
 else { style = isIE ? document.all[divname].style
                     : document.layers[divname]; } // NS4
 return style;
}

function hideElement(divname) {
 getDivStyle(divname).visibility = 'hidden';
}



// annoying detail: IE and NS6 store elt.top and elt.left as strings.
function moveBy(elt,deltaX,deltaY) {
 elt.left = parseInt(elt.left) + deltaX;
 elt.top = parseInt(elt.top) + deltaY;
}

function toggleVisible(divname) {
 divstyle = getDivStyle(divname);
 if (divstyle.visibility == 'visible' || divstyle.visibility == 'show') {
   divstyle.visibility = 'hidden';
 } else {
   fixPosition(divname);
   divstyle.visibility = 'visible';
 }
}

function setPosition(elt,positionername,isPlacedUnder) {
 var positioner;
 if (isIE) {
  positioner = document.all[positionername];
  topDifference = 0;
 } else {
  if (isDOM) {
    positioner = document.getElementById(positionername);
	topDifference = -1;
  } else {
    // not IE, not DOM (probably NS4)
    // if the positioner is inside a netscape4 layer this will *not* find it.
    // I should write a finder function which will recurse through all layers
    // until it finds the named image...
    positioner = document.images[positionername];
  }
 }
// alert(positionername);
// commented out the line below. It was causing issues in firefox
// elt.left = getAbsX(positioner)-1 + 1; // Adjust X Position here for specific need 
 var v = getAbsX(positioner)-1 -5; // Adjust X Position here for specific need
 elt.left = v+"px"; // Adjust X Position here for specific need
 elt.top = getAbsY(positioner)-4 + (isPlacedUnder ? positioner.height : 0) + 23 + topDifference + 'px';  // Adjust Y position here
// alert( elt.left+ " zm|z");
}



function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

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 refreshImg(){
	document.getElementById('theImage').src = 'random_image.php?p=' + Math.random();
}

function checkFields(){

	

		var error = "";
		if (remove_white_space(document.getElementById('Name')) == "Name"){
			error = " - Name\n";
		}
	
		if ((remove_white_space(document.getElementById('Phone')) == "Phone") && (!isEmail(document.getElementById('Email').value))){
			error += " - Phone and/or Email\n";
		} 
	
		if (!remove_white_space(document.getElementById('Email'))){ // there is an email address
			if (!isEmail(document.getElementById('Email').value)) error += " - Email\n";
		}
		
		if (remove_white_space(document.getElementById('Subject')) == "Nature of Enquiry"){
			error += " - Nature of Enquiry\n";
		}
	
		if (remove_white_space(document.getElementById('Message')) == ""){
			error += " - Message\n";
		}
		
		if ((document.form1.contactMethod[1].checked) && !isEmail(document.getElementById('Email').value)){
			error += " \n\nPlease enter a valid email address so we can contact you.\n";
		}
	
		if (error) alert("The following fields are incorrect:\n\n"+error);
		else {
			if (remove_white_space(document.getElementById('ImageValue')) == ""){
				document.getElementById('ImageValue').focus();
				alert("Please enter the six letters or digits that appear in the image in the space provided.");
			} else {
				document.form1.submit();
			}
		}
}

function alterField(field, action, value){
	switch(action){
		case "restore": 
			if (remove_white_space(document.getElementById(field)) == "") document.getElementById(field).value = value;
		break;
		case "clear": 
			if (remove_white_space(document.getElementById(field)) == value) document.getElementById(field).value = "";
		break;
	}
}

function remove_white_space(field){
     return (field.value).replace(/^\s*|\s*$/g,'');
}

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_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_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 isEmail(src) {
     var emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]+[\.]{1}[\\w]+[\.]?[\\w]+$";
     var regex = new RegExp(emailReg);
     if (regex.test(src)) return true;
	 else return false;
  }