function setup() {		
	// Add show/hide help link..
	var helpLinkDiv = document.getElementById('help_link') ;
	if (!helpLinkDiv) return ;
	else {
		var newJSLink = document.createElement('a') ;
		newJSLink.href="javascript:showHideHelp('hide');" ;
		newJSLink.id = "show_hide_help_link" ;
		newJSLinkText = document.createTextNode("Hide help") ;
		newJSLink.appendChild(newJSLinkText) ;
		helpLinkDiv.appendChild(newJSLink) ;
	}
	
	// Try to read show_or_hide value from URL string
	var myString = window.location.search ;
	var soughtString = 'show_help=' ;
	var valPos = myString.indexOf(soughtString) ;
	if (valPos == -1) return false ;
	
	// There is a value. Is it 'show' or 'hide' ?
	showHideHelp(myString.substring(valPos + soughtString.length, valPos + soughtString.length + 4)) ;
}

function showHideHelp(show_or_hide) {

	// Loop through all divs
	// If they have className 'label_note', show or hide
	var allDivs = document.getElementsByTagName('div') ;
	for (var a=0; a<allDivs.length; a++) {
		// Pad out with spaces as a class property may contain >1 class separated by spaces
		paddedClass = " " + allDivs[a].className + " " ;
		if (paddedClass.indexOf(' label_note ') != -1)
			allDivs[a].style.display = (show_or_hide == 'hide') ? 'none' : 'block' ;
	}
	// Update the show/hide link on the page
	var helpLink = document.getElementById('show_hide_help_link') ;
	// Set the text of the link
	helpLink.firstChild.nodeValue = (show_or_hide == 'hide') ? 'Show help' : 'Hide help' ;
	// And set the value of the JS function
	helpLink.href = (show_or_hide == 'hide') ? "javascript:showHideHelp('show');" : "javascript:showHideHelp('hide');" ;    
	setFormActions(show_or_hide) ;
}

function setFormActions(show_or_hide) {
    
	// Add the value "show_help=hide" to the action parameter of all forms
	var allForms = document.getElementsByTagName('form')          
	for (var b=0; b<allForms.length; b++) {
		// if (allForms[b].action.indexOf("?") != -1) allForms[b].action = allForms[b].action + "&show_help=" + show_or_hide ;
		// else allForms[b].action = allForms[b].action + "?show_help=" + show_or_hide ;
		
		// Make sure there's a hidden field to every form to carry the show/hide flag
		// This is in case the form is method="get", where simply appending the value to the URL would get overwritten when the form is submitted
		if (document.getElementById('show_or_hide_flag')) {
			// Set it to the relevant value
			document.getElementById('show_or_hide_flag').value = show_or_hide ;
		}        
		else {        
			var newField = document.createElement('input') ;
			newField.type = 'hidden' ;
			newField.name = 'show_help' ;
			newField.value = show_or_hide ;
			newField.id = "show_or_hide_flag" ;
			allForms[b].appendChild(newField) ;
		}
    
        // Set the hidden show_help field to the correct value    
        if (allForms[b].show_help) {
            //Set it to the relevant value
			allForms[b].show_help.value = show_or_hide ;
		}
	}
    
    
    // Add the value "show_help=xxxx" to the end of the href of all anchor tags with the name show_help_anchor
	var allHelpAnchors = document.getElementsByName('show_help_anchor')
    var appendValue = 'show_help=' + show_or_hide;
	for (var b = 0; b < allHelpAnchors.length; b++) {
    
        //Set it to the relevant value
        if (allHelpAnchors[b].href.search('show_help=show') != -1) {   
            allHelpAnchors[b].href = allHelpAnchors[b].href.replace('show_help=show', appendValue);
        }
        else if (allHelpAnchors[b].href.search('show_help=hide') != -1) {   
            allHelpAnchors[b].href = allHelpAnchors[b].href.replace('show_help=hide', appendValue);
        }
        else {  
            allHelpAnchors[b].href = allHelpAnchors[b].href + '&' + appendValue;
        }
    }
    
}


function showHide() {

    var helpLink = document.getElementById('show_hide_help_link') ;    
    if (helpLink) {
        showHideHelp(helpLink.name) ;
    }    
}

function getFileNameFromURL() {
	var myString = window.location.href ;
	var lastSlash = myString.lastIndexOf("/") ;
	var qMark = myString.indexOf("?") ;
	if (qMark == -1)
		qMark = myString.length ;
	return (myString.substring(lastSlash + 1, qMark)) ;
}

function addEvent(elm, evType, fn, useCapture) {
	// Cross-browser evenet handling for IE5+, NS6+ and Mozilla/Gecko by Scott Andrew
	if (elm.addEventListener) {
		elm.addEventListener(evType, fn, useCapture) ;
		return true ;
	}
	else if (elm.attachEvent) {
		var r = elm.attachEvent('on' + evType, fn) ;
		return r ;
	}
	else {
		elm['on' + evType] = fn ;
	}
}




// This function is used to enable/disable 'other legal status' field based on selection
function changeLegalStatus(statusTagIdName, otherStatusTagIdName, value, form){
      

  // count the status fields
  var statusSize = 0;
  for (i = 0; i < form.elements.length; i++) {
    if (form.elements[i].id == statusTagIdName) {
      statusSize++;
    }
  }
    

  // reset the text field if not "other"
  if (value <= (statusSize - 1)) {    
    document.getElementById(otherStatusTagIdName).value="";
    document.getElementById(otherStatusTagIdName).disabled=true;    
  } 
  else {    
    document.getElementById(otherStatusTagIdName).disabled=false;    
  }

}


// Note to developers. Un-comment the following line to activate method call on load.
// addEvent(window, 'load', setup, false) ;
addEvent(window, 'load', showHide, false) ;