/*
	patienthealthinternational.com Javascript - shows bodymap image map
*/
function addMasterScript(){
	//this adds in the master root.js file which includes all basic JS functionality
	//this must be included in all local js files 
	//Do not copy code from the root.js file, use this function to import it instead
	if(document.getElementById){
		//browser supports getElementById - attempt to add js functionality
		//this is a site-specific js file so include the master
		//create a script element
		if(document.createElement){
			elScript=document.createElement('script');		
			if(elScript){
				//include master file
				elScript.src='/_mshost81109/system/styles/root/javascript/root.js';
				//elScript.src='../styles/root/javascript/root.js';
				elScript.type='text/javascript';
				//get a handle to this script file
				elHead=document.getElementsByTagName('head');
				if(elHead){
					//get script
					elExistingScript=document.getElementsByTagName('script');
					if(elExistingScript){
						//add into head before previous element
						elHead[0].insertBefore(elScript,elExistingScript[0]);
						//attachEvents function is called when the master file loads 
						//so global functionality is still enabled
					}
				}
			}
		}
	}
}	


//call the above function
addMasterScript();

// set some flags we can use to tell what kind of browser we are dealing with.

var isNS4 = document.layers ? true : false;
var isIE4 = document.all ? true : false;
var isDom = document.getElementById ? true : false; 

function popupDisplay( bodypartId, imageId, xPos, yPos, autohide, width, roxPos, royPos) {
	// first find the bodymap
	var bodymap = getImage('bodymapImage');
	if (!(bodymap)) {
		return;
	}

	// hide any currently displayed popup
	popupHideCurrent( bodymap );
	// display the list of conditions for the selected body part.
	var popup = getElementStyle('conditionList' + bodypartId);
	if (!(popup)) {
		return;
	}
	popup.display = 'block';
		
	if (isNS4) {
		popup.visibility = 'show';
	}
	
	if (autohide == 'false') {
		// now get the popup element rather than the style of the popup.
		popup = getElement('conditionList' + bodypartId);
		popup.onmouseout = null;
	}
	bodymap.currentpopup = bodypartId;
	
	// show any rollover image
	
	var rollover = document.getElementById('bodymapImageRollover');
	if(rollover){
		rolloverImage=rollover.lastChild;
		if(rolloverImage){
			setAttributeCrossBrowser(rolloverImage,'class','rollover' + bodypartId);	
		}	
	}
		
}

function popupHide( bodypartId ) {
	// check if we are still inside the popup
	// get the mouse position
	var posx = 0;
	var posy = 0;
	var e = window.event;
	if (e.pageX || e.pageY)	{
		posx = e.pageX;
		posy = e.pageY;
	}
	else if (e.clientX || e.clientY) {
		posx = e.clientX + document.body.scrollLeft;
		posy = e.clientY + document.body.scrollTop;
	}
	
	// get the popups x, y, height, width.
	var popup = getElement('conditionList' + bodypartId );
	var popx = parseInt(getAbsX(popup));
	if (isNaN(popx)) return;
	var popy = parseInt(getAbsY(popup));
	if (isNaN(popy)) return;
	var poph = parseInt(getHeight(popup));
	if (isNaN(poph)) return;
	var popw = parseInt(getWidth(popup));
	if (isNaN(popw)) return;
	posx = parseInt(posx);
	if (isNaN(posx)) return;
	posy = parseInt(posy);
	if (isNaN(posy)) return;
	
	// Check if the mouse is actually inside the div, but over another element.
	if (((posx-2) >= popx) && ((posx+2) <= (popx + popw))
		&& ((posy-2) >= popy) && ((posy+2) <= (popy + poph))) {
		// it is, so don't hide the popup.
		return;
	}
	
	popup = getElementStyle( 'conditionList' + bodypartId );
	popup.display = 'none';
	if (isNS4) {
		popup.visibility = 'hidden';
	}
	bodymap.currentpopup = undefined;
		
	// hide any rollover image
	var rollover = getElementStyle( bodymapRolloverID );
	if (!(rollover)) {
		return;
	}
	
	rollover.display = 'none';
	if (isNS4) {
		rollover.visibility = 'hidden';
	}
}

function popupHideCurrent(bodymap) {
	if (!(bodymap.currentpopup)) {
		return;
	}
	popup = getElementStyle( 'conditionList' + bodymap.currentpopup );
	popup.display = 'none';
	if (isNS4) {
		popup.visibility = 'hidden';
	}
	
	}

function getElementStyle( name ) {
	if (!(getElement(name))) {
		return;
	}
	var elt;
	if (isDom) {
		elt = document.getElementById(name).style;
	}
	else if (isIE4) {
		elt = document.all(name).style;
	}
	else if (isNS4) {
		elt = document.layers[name];
	}
	return elt;
}

function getElement( name ) {
	var elt;
	if (isDom) {
		elt = document.getElementById(name)
	}
	else if (isIE4) {
		elt = document.all(name);
	}
	else if (isNS4) {
		elt = document.layers[name];
	}
	return elt;
}

function getImage( name ) {
	var image;
	if (isDom) {
		image = document.getElementById(name);
	}
	else if (isIE4) {
		image = document.all(name);
	}
	else if (isNS4) {
		image = document.images[name];
	}
	return image;
}

function getAbsX(elt) {
	// get the absolute x coord of elt.
	// NS4 has element.x, whereas for NS6 and IE we need to do other stuff
	return (elt.x) ? elt.x : getAbsPos(elt,"Left");
}

function getAbsY(elt) {
	// get the absolute y coord of elt.
	// NS4 has element.y, whereas for NS6 and IE we need to do other stuff
	return (elt.y) ? elt.y : getAbsPos(elt,"Top");
}

function getAbsPos(elt,which) {
	// for IE and NS6 we need to get the offset of the elements within all its
	// containers.
	var iPos = 0;
	while (elt != null) {
		iPos += elt["offset" + which];
		elt = elt.offsetParent;
	}
	return iPos;
}

function getHeight(elt) {
	// get the height of the element in pixels.
	if (isNS4) {
		return elt.clip.height;
	}
	else {
		return elt.clientHeight;
	}
}

function getWidth(elt) {
	// get the width of the element in pixels
	if (isNS4) {
		return elt.clip.width;
	}
	else {
		return elt.clientWidth;
	}
}

function addMap(){
	//attach mouseover events to body image map
	for(i=1;i<9;i++){
		area=document.getElementById('area'+i);
		if(area){
			assignMouseover(area,i);
		}
	}
}

function assignMouseover(el,i){
	//avoids reference problem with loop
	el.onmouseover=function(){
		popupDisplay(i);
	}
}

function fnSwitchpage(the_form){
 	//Get the selected link URL from the dropdown
  	var link_chosen;
  	link_chosen=the_form.selection.options[the_form.selection.selectedIndex].value;	
 	//Redirect to this URL
 	window.location=link_chosen;
 	return false;
}

function switchPageSelect()
{
	//Put the Redirect forms into an array
	var form_id=new Array;
	if (document.getElementById('frm_conditions')) {
	form_id[0]=document.getElementById('frm_conditions');
	}
	if (document.getElementById('frm_medicines')) {
	form_id[1]=document.getElementById('frm_medicines');
	}
	if (form_id.length > 0) {
	 	for (var i = 0; i < form_id.length; i++) { 
			form_id[i].onsubmit = function () {
			// On submit tell fnSwitchpage function which form to use
				return fnSwitchpage(this); 
			}
		}
	}
}

var toCall=new Array;	
toCall[0]=addMap;
toCall[1]=switchPageSelect;