var DHTML = (document.getElementById || document.all || document.layers);

function findlayer(layerscollection, layerid) {
	for(i=0; i<layerscollection.length; i++) {
		if(layerscollection[i].id == layerid) {
			return layerscollection[layerid];
		}
		if(i == layerscollection.length-1 && layerscollection[i].document.layers.length > 0) {
			innerlayers = findlayer(layerscollection[i].document.layers, layerid);
			if(innerlayers != false) return innerlayers;
		} 
		if(i == layerscollection.length-1 && layerscollection[i].document.layers.length == 0) {
			return false;
		}
	}
}

function getObj(name){  
	if (document.getElementById)  {      
		if(document.getElementById(name)) {
			return document.getElementById(name);        
		} else {
			return false;
		}
	}  else if (document.all)  {        
		if(document.all[name]) {
			return document.all[name];        
		} else {
			return false;
		}
	}  else if (document.layers)  {  
		return findlayer(document.layers, name);
	}
}

function right(e) {
	if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2)){
		return false;
	}else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) {
		alert("Just Cities, the premier site for luxury city breaks and holidays!");
		return false;
	}
return true;
}
/*
document.onmousedown=right;
document.onmouseup=right;

if (document.layers){
	window.captureEvents(Event.MOUSEDOWN);
}
if (document.layers){
	window.captureEvents(Event.MOUSEUP);
}

window.onmousedown=right;
window.onmouseup=right;
*/

if (navigator.appName == "Microsoft Internet Explorer"){
	isNavigator = "n";
}else{
	isNavigator = "y";
}  

//bookmark
function bookmark()
	{
	if (navigator.appName == 'Microsoft Internet Explorer' && parseInt(navigator.appVersion) >= 4)
		{
		window.external.AddFavorite('http://www.justcities.com/', 'Just Cities - Luxury city breaks and Holidays');
		}
}

//top menu code
function MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function showlayer(layer,arg2,action) { //v3.0
	//var ua = window.navigator.userAgent;
	//var msie = ua.indexOf ( "MSIE " );
	//var display = "true";
	//  if ( msie > 0 ) {     // If Internet Explorer, return version number
    //     if(parseInt (ua.substring (msie+5, ua.indexOf (".", msie ))) <=3) {
	//		display = "false";
	//	 }
	//
	//  } 
	
	

	if (!DHTML) return;
   	thelayer = new getObj(layer);
	if (thelayer == false) return;
	if(action == 'show') {	
		thelayer.style.visibility = "visible";
	} else {
		thelayer.style.visibility = "hidden";
	}

	
}

function popitup(imagename) {
	itis = window.open("areamap.php?image="+imagename,"","toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=500,height=500");
	itis.moveTo(100,100);
	itis.focus();
}

function getObj(name)
{
  if (document.getElementById)
  {
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
	this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}

var clipTop = 0;
var clipWidth = 210;
var clipBottom = 200;
var topper = 0;
var lyrheight = 0;
var time,amount,theTime,theHeight,DHTML;

function prepLyr(layername)
{
	DHTML = (document.getElementById || document.all || document.layers)
	if (!DHTML) return;
	var x = new getObj(layername);
	if (document.layers)
	{
		
		lyrheight = x.style.clip.bottom;
		lyrheight += 20;
		x.style.clip.top = clipTop;
		x.style.clip.left = 0;
		x.style.clip.right = clipWidth;
		x.style.clip.bottom = clipBottom;
	}
	else if (document.getElementById || document.all)
	{
		lyrheight = x.obj.offsetHeight;
		x.style.clip = 'rect('+clipTop+' '+clipWidth+' '+clipBottom+' 0)'
			
	}
}

function scrollayer(layername,amt,tim)
{
	if (!DHTML) return;
	thelayer = new getObj(layername);
	if (!thelayer) return;
	amount = amt;
	theTime = tim;
	realscroll();
}

function realscroll()
{
	if (!DHTML) return;
	clipTop += amount;
	clipBottom += amount;
	topper -= amount;
	if (clipTop < 0 || clipBottom > (lyrheight + 10))
	{
		clipTop -= amount;
		clipBottom -= amount;
		topper += amount;
		return;
	}
	if (document.getElementById || document.all)
	{
		clipstring = 'rect('+clipTop+' '+clipWidth+' '+clipBottom+' 0)'
		thelayer.style.clip = clipstring;
		thelayer.style.top = topper;
	}
	else if (document.layers)
	{
		thelayer.style.clip.top = clipTop;
		thelayer.style.clip.bottom = clipBottom;
		thelayer.style.top = topper;
	}
	time = setTimeout('realscroll()',theTime);
}

function stopScroll()
{
	if (time) clearTimeout(time);
}

function resetLyr(layername)
{
	clipTop = 0;
	clipWidth = 210;
	clipBottom = 200;
	topper = 0;
	lyrheight = 0;
	amount = 0;

	thelayer = new getObj(layername);

	if (document.getElementById || document.all)
	{
		clipstring = 'rect('+clipTop+' '+clipWidth+' '+clipBottom+' 0)'
		thelayer.style.clip = clipstring;
		thelayer.style.top = topper;
	}
	else if (document.layers)
	{
		thelayer.style.clip.top = clipTop;
		thelayer.style.clip.bottom = clipBottom;
		thelayer.style.top = topper;
	}

}

function changeborder(imagename, type)
{
	if (!DHTML) return;
   	theimage = new getObj(imagename);
	if (theimage == false) return;
	if(type == 0) {	
		theimage.style.borderColor = "#66CC66";
	} else {
		theimage.style.borderColor = "#FDD55E";
	}
}

function changebackground(id,type)
{
	if(!DHTML) return;
	thelayer = new getObj(id);
	if (thelayer == false) return;
	if(type == 0) {
		thelayer.style.background = "#81C1ED";
		//thelayer.style.background = "#FFFFFF";
		thelayer.style.color = "#514C8C";
	} else {
		thelayer.style.background = "#514C8C";
		thelayer.style.color = "#ffffff";
	}
}

function recalctotal(subtotal, rooms, maintotal, partysize, price, formname, perperson) {
	//get new subtotal for the selected number of rooms of a certain type
	numrooms = eval("document.forms."+formname+"."+rooms+".options[document.forms."+formname+"."+rooms+".selectedIndex].value"+";");
	
	if(perperson == 'y') {
		newsubtotal = partysize * price * numrooms;
	} else {
		newsubtotal = price * numrooms;
	}
	
	//get the difference in the new main total and the current main total - the complex string functions are used to remove the 
	//'£' sign from the beginning of the string.
	oldsubtotal = eval("document.forms."+formname+"."+subtotal+".value;");
	maintotaldiff = newsubtotal - (oldsubtotal.substring(1,(oldsubtotal.length)));

	//get the new main total using the difference
	currentmaintotal = eval("document.forms."+formname+"."+maintotal+".value;");
	newmaintotal = parseInt(currentmaintotal.substring(1,(currentmaintotal.length)))+parseInt(maintotaldiff);

	//write the new main total and sub total values to their appropriate boxes
	eval("document.forms."+formname+"."+subtotal+".value=\"£\"+newsubtotal;");
	eval("document.forms."+formname+"."+maintotal+".value=\"£\"+newmaintotal;");
}

function testforselections(formname, formnum, numberofrooms) {
	formname = formname+formnum;
	selectionmade=false;
	for(i=1; i<=numberofrooms; i++) { 
		if(eval("document.forms."+formname+".norooms"+i+".options[document.forms."+formname+".norooms"+i+".options.selectedIndex].value;") > 0) {
			selectionmade=true;
			break;
		}
	}
	if(selectionmade==false) {
		alert("Please select some accommodation for this date");	
		return false;
	} else {
		return true;
	}
}