// Completely re-usable function
var sLineBreak = "\n"; // change to <br /> for HTML
var sAlertPrefix = "Please check the form for the following:" + sLineBreak;
var sAlertLinePrefix = "- ";
var fAlertHandler = window.alert; // change to some other function reference if required.
function checkForm( oForm )
{
	var bReturnValue = true;
	
	// Used to collect message information.
	var sAlertStr = "";
	
	var iElementCount = oForm.elements.length;
	var sElementValue;
	var oElement;
	var sElementType;
	var sElementTagName;
	
	var sRequired;
	var sDescription;
	var sValue;
	var sCheckValue;
	var sSelectLength;
	var isOneSelected;
	var radioRecorded;
	for ( var iElement = 0; iElement < iElementCount; iElement++ )
	{
		oElement = oForm.elements[ iElement ];
		sElementTagName = oElement.tagName.toUpperCase();
		
		// retrive validation information regarding the element
		sRequired = oElement.getAttribute( "required" );
		sDescription = oElement.getAttribute( "desc" );
		sName = oElement.getAttribute( "name" );
		sValue = oElement.value;
		sCheckValue = oElement.checked;
		sSelectLength = oElement.length;
		switch( sElementTagName )
		{
			case "INPUT":
				sElementType = oElement.type;
				switch ( sElementType )
				{
					case "checkbox":
						if ( sRequired && !sCheckValue )sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n";
						break;
					case "radio":
						if ( sRequired )
						{
							for (counter = 0; counter < oForm[sName].length; counter++)
							{
								if (oForm[sName][counter].checked) isOneSelected = true; 
							}
							if( !isOneSelected ) sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n";	
						}
						break;
					default:
						if ( sRequired && !sValue )sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n";									
						break;
				}
				break;
			case "TEXTAREA":
				if ( sRequired && !sValue ) sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n"; 
				break;
			case "SELECT":
				if( sRequired && oElement.selectedIndex == -1 )
				{
					sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n"; 
					break;
				}
				if( sRequired && oForm[sName][oElement.selectedIndex].value == "#" ) 
				{
					sAlertStr += sAlertLinePrefix + sDescription + " is mandatory.\n"; 
					break;
				}
		}
	}
	// If the Alert String contains is not blank then there are problems with the form
	// contents.
	if ( sAlertStr != "" )
	{
		sAlertStr = sAlertPrefix + sAlertStr;
		fAlertHandler( sAlertStr );
		return false;
	}
	return true;
}
function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=750,height=450,left = 540,top = 412');");
}
// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
//
// ************************
// layer utility routines *
// ************************

function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility

function moveObject(objectId, newXCoordinate, newYCoordinate) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.left = newXCoordinate;
	styleObject.top = newYCoordinate;
	return true;
    } else {
	// we couldn't find the object, so we can't very well move it
	return false;
    }
} // moveObject

// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
// ********************************
// application-specific functions *
// ********************************

// store variables to control where the popup will appear relative to the cursor position
// positive numbers are below and to the right of the cursor, negative numbers are above and to the left
var xOffset = 15;
var yOffset = -5;

function showPopup (targetObjectId, eventObj) {
    if(eventObj) {
	// hide any currently-visible popups
	hideCurrentPopup();
	// stop event from bubbling up any farther
	eventObj.cancelBubble = true;
	// move popup div to current cursor position 
	// (add scrollTop to account for scrolling for IE)
	var newXCoordinate = (eventObj.pageX)?eventObj.pageX + xOffset:eventObj.x + xOffset + ((document.body.scrollLeft)?document.body.scrollLeft:0);
	var newYCoordinate = (eventObj.pageY)?eventObj.pageY + yOffset:eventObj.y + yOffset + ((document.body.scrollTop)?document.body.scrollTop:0);
	moveObject(targetObjectId, newXCoordinate, newYCoordinate);
	// and make it visible
	if( changeObjectVisibility(targetObjectId, 'visible') ) {
	    // if we successfully showed the popup
	    // store its Id on a globally-accessible object
	    window.currentlyVisiblePopup = targetObjectId;
	    return true;
	} else {
	    // we couldn't show the popup, boo hoo!
	    return false;
	}
    } else {
	// there was no event object, so we won't be able to position anything, so give up
	return false;
    }
} // showPopup

function hideCurrentPopup() {
    // note: we've stored the currently-visible popup on the global object window.currentlyVisiblePopup
    if(window.currentlyVisiblePopup) {
	changeObjectVisibility(window.currentlyVisiblePopup, 'hidden');
	window.currentlyVisiblePopup = false;
    }
} // hideCurrentPopup



// ***********************
// hacks and workarounds *
// ***********************

// initialize hacks whenever the page loads
window.onload = initializeHacks;

// setup an event handler to hide popups for generic clicks on the document
document.onclick = hideCurrentPopup;

function initializeHacks() {
    // this ugly little hack resizes a blank div to make sure you can click
    // anywhere in the window for Mac MSIE 5
    if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
	&& (navigator.platform.indexOf('Mac') != -1)
	&& getStyleObject('blankDiv')) {
	window.onresize = explorerMacResizeFix;
    }
    resizeBlankDiv();
    // this next function creates a placeholder object for older browsers
    createFakeEventObj();
}

function createFakeEventObj() {
    // create a fake event object for older browsers to avoid errors in function call
    // when we need to pass the event object to functions
    if (!window.event) {
	window.event = false;
    }
} // createFakeEventObj

function resizeBlankDiv() {
    // resize blank placeholder div so IE 5 on mac will get all clicks in window
    if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
	&& (navigator.platform.indexOf('Mac') != -1)
	&& getStyleObject('blankDiv')) {
	getStyleObject('blankDiv').width = document.body.clientWidth - 20;
	getStyleObject('blankDiv').height = document.body.clientHeight - 20;
    }
}

function explorerMacResizeFix () {
    location.reload(false);
}