//--------------------- Last Modified --> 2006.02.17 ---------------------//
//-----------------------------------------------------------------------//


//------------------- for clearing and replacing text in form input fields and textareas -------------------//
function clearText(thefield) {
  if (thefield.defaultValue==thefield.value) { thefield.value = "" }
} 
function replaceText(thefield) {
  if (thefield.value=="") { thefield.value = thefield.defaultValue }
}


//------------------- Form Validation -------------------//
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 YY_checkform() { //v4.71
//copyright (c)1998,2002 Yaromat.com
  var a=arguments,oo=true,v='',s='',err=false,r,o,at,o1,t,i,j,ma,rx,cd,cm,cy,dte;
  for (i=1; i<a.length;i=i+4){
    if (a[i+1].charAt(0)=='#'){r=true; a[i+1]=a[i+1].substring(1);}else{r=false}
    o=MM_findObj(a[i].replace(/\[\d+\]/ig,""));
    o1=MM_findObj(a[i+1].replace(/\[\d+\]/ig,""));
    v=o.value;t=a[i+2];dv = o.defaultValue;
    if (o.type=='text'||o.type=='password'||o.type=='hidden'){
      if ((r&&v.length==0)||v==dv){err=true}
      if (v.length>0)
      if (t==1){ //fromto
        ma=a[i+1].split('_');if(isNaN(v)||v<ma[0]/1||v > ma[1]/1){err=true}
      } else if (t==2){
        rx=new RegExp("^[\\w\.=-]+@[\\w\\.-]+\\.[a-zA-Z]{2,4}$");if(!rx.test(v))err=true;
      } else if (t==3){ // date
        ma=a[i+1].split("#");at=v.match(ma[0]);
        if(at){
          cd=(at[ma[1]])?at[ma[1]]:1;cm=at[ma[2]]-1;cy=at[ma[3]];
          dte=new Date(cy,cm,cd);
          if(dte.getFullYear()!=cy||dte.getDate()!=cd||dte.getMonth()!=cm){err=true};
        }else{err=true}
      } else if (t==4){ // time
        ma=a[i+1].split("#");at=v.match(ma[0]);if(!at){err=true}
      } else if (t==5){ // check this 2
            if(o1.length)o1=o1[a[i+1].replace(/(.*\[)|(\].*)/ig,"")];
            if(!o1.checked){err=true}
      } else if (t==6){ // the same
            if(v!=MM_findObj(a[i+1]).value){err=true}
      }
    } else
    if (!o.type&&o.length>0&&o[0].type=='radio'){
          at = a[i].match(/(.*)\[(\d+)\].*/i);
          o2=(o.length>1)?o[at[2]]:o;
      if (t==1&&o2&&o2.checked&&o1&&o1.value.length/1==0){err=true}
      if (t==2){
        oo=false;
        for(j=0;j<o.length;j++){oo=oo||o[j].checked}
        if(!oo){s+='* '+a[i+3]+'\n'}
      }
    } else if (o.type=='checkbox'){
      if((t==1&&o.checked==false)||(t==2&&o.checked&&o1&&o1.value.length/1==0)){err=true}
    } else if (o.type=='select-one'||o.type=='select-multiple'){
      if(t==1&&o.selectedIndex/1==0){err=true}
    }else if (o.type=='textarea'){
      if(v.length<a[i+1]){err=true}
    }
    if (err){s+=a[i+3]+'\n'; err=false}
  }
  if (s!=''){alert('Please complete the following required fields:\t\t\t\t\t\n\n'+s)}
  document.MM_returnValue = (s=='');
}

//------------------- Body Switcher -------------------//


// Invasion of the Body Switchers
// This copyright statement must remain in place for both personal and commercial use
// ***********************************************************************************
// Creative Commons License -- http://creativecommons.org/licenses/by-nc-nd/2.0/
// Original concept and article by Malarkey (Andy Clarke) -- http://www.stuffandnonsense.co.uk/
// DOM scripting by Brothercake (James Edwards) -- http://www.brothercake.com/
// Create element and attributes based on a method by beetle -- http://www.peterbailey.net/
//************************************************
//open initialisation function
function iotbs() { switcher = new switchManager();
//************************************************



/*****************************************************************************
 Define switching controls
*****************************************************************************/


//create a switcher form ('container-id', 'label')
var screenSwitcher = new bodySwitcher('font-change', ' ');

//add a new class option ('classname', 'label')
screenSwitcher.defineClass('default', 'Default');
screenSwitcher.defineClass('larger', 'Larger');
screenSwitcher.defineClass('largest', 'Largest');

/*****************************************************************************
*****************************************************************************/



//close initialisation function
};


//global preferences manager reference
var switcher;


//setup initialisation function
//.. gecko, safari, konqueror and generic
if(typeof window.addEventListener != 'undefined')
{
	window.addEventListener('load', iotbs, false);
}
//.. opera 7
else if(typeof document.addEventListener != 'undefined')
{
	document.addEventListener('load', iotbs, false);
}
//.. win/ie
else if(typeof window.attachEvent != 'undefined')
{
	window.attachEvent('onload', iotbs);
}


//preferences manager 
function switchManager()
{
	//string for storing the overall custom classname
	//I was originally storing it in the body class name directly
	//but 1.7+ mozilla builds were not honouring the trailing whitespace we need
	this.string  = '';
	
	//store reference to body element
	this.body = document.getElementsByTagName('body')[0];

	//store the initial classname
	this.initial = this.body.className;
	
	//if the default classname is empty, add "iotbs"
	//because we need there to be at least one classname already - 
	//the leading and trailing space in each custom classname is required, 
	//but you can't set the body classname as " something" (beginning with a leading space)
	//because that may not work in Opera 7
	if(this.initial == '')
	{
		this.initial = 'itobs';
	}
	
	//look for a stored cookie
	this.cookie = this.read();

	//if it exists
	if(this.cookie != null)
	{
		//store cookie value to string
		this.string = this.cookie;
		
		//set new body class name
		this.body.className = this.initial + this.string;
	}
	
	//*** dev
	//document.title = '<' + this.body.className.replace(/ /g,'+') + '>   [' + this.string.replace(/ /g,'+') + ']';
	
};

//set a cookie method
switchManager.prototype.set = function(days)
{
	//format expiry date
	this.date = new Date();
	this.date.setTime(this.date.getTime() + ( days *24*60*60*1000));
	
	//store the string, replacing spaces with '#' so that leading spaces are preserved
	this.info = this.string.replace(/ /g,'#');
	
	//if the value is empty, set its expiry in the past to delete the cookie
	if(this.info == '') { this.date.setTime(0); }
	
	//create the cookie
	document.cookie = 'bodySwitcher=' + this.info
		+ '; expires=' + this.date.toGMTString() 
		+ '; path=/';
		
};


//read a cookie method
switchManager.prototype.read = function()
{
	//set null reference so we always have something to return
	this.cookie = null;
	
	//if a cookie exists
	if(document.cookie)
	{
		//if it's our cookie
		if(document.cookie.indexOf('bodySwitcher')!=-1)
		{
			//extract and store relevant information (turning '#' back into spaces)
			this.cookie = document.cookie.split('bodySwitcher=');
			this.cookie = this.cookie[1].split(';');
			this.cookie = this.cookie[0].replace(/#/g,' ');
		}
	}
	
	return this.cookie;
};


//switcher form constructor
function bodySwitcher(divid, label)
{

	//create an associate array of classnames for this option
	//so we can later iterate through and remove them from the custom classname string
	this.classes = [];

	//start counting options, because we'll need the index of each option as it's created
	//so that an option can be selected by default if necessary
	this.options = 0;
	
	//outer form
	this.attrs = { 'action' : '' };
	this.form = this.createElement('form', this.attrs);
	document.getElementById(divid).appendChild(this.form);

	//fieldset inside form
	this.fieldset = this.createElement('fieldset');
	this.form.appendChild(this.fieldset);

	//label inside fieldset
	this.attrs = { 'for' : 'select-' + divid };
	this.label = this.createElement('label', this.attrs);
	this.fieldset.appendChild(this.label);

	//span inside label containing label text
	this.attrs = { 'text' : label };
	this.span = this.createElement('span', this.attrs);
	this.label.appendChild(this.span);

	//select inside label
	this.attrs = { 'id' : 'select-' + divid };
	this.select = this.createElement('select', this.attrs);
	this.label.appendChild(this.select);

	//create a global [within this scope] reference to 'this'
	var self = this;

	//bind onchange handler
	this.select.onchange = function()
	{

		//run through classnames array
		this.classLen = self.classes.length;
		for(var i=0; i < this.classLen; i++)
		{
			//remove this key (custom class name) from string
			switcher.string = switcher.string.replace(' ' + self.classes[i] + ' ','');
		}

		//get new value from option
		this.chosen = this.options[this.options.selectedIndex].value;

		//if it isn't default then add to string
		//we need both a leading and a trailing space to work with 
		//to avoid confusion with identical leading or trailing substrings in classnames,
		//such as "high" and "highcontrast" or "large-serif" and "small-serif"
		if(this.chosen != 'default')
		{
			switcher.string += ' ' + this.chosen + ' ';	
		}
		
		//set new body class name
		switcher.body.className = switcher.initial + switcher.string;

		//store changes to a cookie which expires a year from now
		switcher.set(365)
		
		//*** dev
		//document.title = '<' + switcher.body.className.replace(/ /g,'+') + '>   [' + switcher.string.replace(/ /g,'+') + ']';

	};

};

//add a new class option method
bodySwitcher.prototype.defineClass = function(key, val)
{
	//option inside select
	this.attrs = { 'value' : key, 'text' : val }; 
	this.option = this.createElement('option', this.attrs);
	this.select.appendChild(this.option);

	//check for cookie value 
	if(switcher.cookie != null)
	{
		//if value contains this key
		if(switcher.cookie.indexOf(' ' + key + ' ')!=-1)
		{
			//select this option
			this.select.selectedIndex = this.options;
		}
	}
	
	//store the classname 
	this.classes[this.options] = key;

	//increase option count
	this.options ++;

};

//create element and attributes method -- http://www.codingforums.com/showthread.php?s=&postid=151108
bodySwitcher.prototype.createElement = function(tag, attrs)
{
	//detect support for namespaced element creation, in case we're in the XML DOM
	this.ele = (typeof document.createElementNS != 'undefined') ? document.createElementNS('http://www.w3.org/1999/xhtml',tag) : document.createElement(tag);

	//run through attributes argument
	if(typeof attrs != 'undefined')
	{
		for(var i in attrs)
		{
			switch(i)
			{
				//create a text node
				case 'text' :
					this.ele.appendChild(document.createTextNode(attrs[i]));
					break;
				
				//create a class name
				case 'class' : 
					this.ele.className = attrs[i];
					break;
				
				//create a for attribute 
				case 'for' : 
					this.ele.setAttribute('htmlFor',attrs[i]);
					break;
				
				//create a generic attribute using IE-safe attribute creation
				default : 
					this.ele.setAttribute(i,'');
					this.ele[i] = attrs[i];
					break;
			}
		}
	}
	return this.ele;
};