// JavaScript Document
$(document).ready(function(){
var currentSlide, nextSlide, layerr, nOfImages = 7, timeId ;
function flashShow(currentSlide){
	
	if(currentSlide <= nOfImages){
		var slideId = 	"#slide";
		slideId 	+= 	currentSlide ;
		timeId = setTimeout(function(){$(slideId).fadeOut(1000, function(){nextFlash(currentSlide, slideId)})}, 3000);
	}
	
	else if(currentSlide > nOfImages && currentSlide <= 14){
		var bkwId		= currentSlide -  nOfImages ;
		var slideId 	= 	"#slide"; 
		slideId			+=	bkwId ;
		timeId = setTimeout(function(){$(slideId).fadeIn(1, function(){nextFlash(currentSlide, slideId)})}, 1);
	}
	
	else if(currentSlide > 14){
		currentSlide = 1;
		flashShow(currentSlide);
	}
}

//send the current flash to the back of other and move to the next slideshow
function nextFlash(currentSlide, slideId){
	var send2Back = currentSlide + nOfImages; 
		nextSlide = currentSlide + 1; 
		flashShow(nextSlide);
}
flashShow(1);
						   })

/*
$(document).ready(function(){ 
function imageArray(nImg, width, height){
var showImage = new Array();
for (var x=1; x<=nImg; x++){
	showImage[x] = new Image(width, height);
	showImage[x].src = "images/fla"+ x +".png" ;
	}
return showImage ;
}
imageData = imageArray(6, 320, 140);

var imageDataLength = 6;
var nextImg = 0 ;
*/

//this is form validator to be used on all form on the website
function validator(form){
var name 		= form.name ;
var mail 		= form.mail ;
var telephone	= form.tel ;
var address		= form.address ;
var brief 		= form.detail ;

if(name.value==""){
	alert("Please enter a valid name");
	name.focus();
	name.style.background="yellow";
	return false ;}

else if (mail.value==""||mail.value.indexOf("@")<1|| mail.value.lastIndexOf(".")- mail.value.indexOf("@")<2){
	alert("Please enter a valid e-mail") ;
	mail.focus();
	mail.style.background="yellow" ;
	return false ;}

else if (telephone.value ==""){
	alert("Please enter a telephone number") ;
	telephone.focus();
	telephone.style.background="yellow" ;
	return false ;}
	
else if (address.value ==""){
	alert("Please enter your address") ;
	address.focus();
	address.style.background="yellow" ;
	return false ;}

else if (brief.value == null){
	alert("Please enter the detail of your site requirement") ;
	brief.focus();
	brief.style.background="yellow" ;
	return false ;}

//if every input are correct submit the form 
else {return true}
}