// JavaScript Document
window.onload=function(){
	InitPromo();
}
var imgs = Array;
  imgs[0]=new Image();
  imgs[0].src="images/banner_solar.jpg";
  imgs[1]=new Image();
  imgs[1].src="images/banner_hazeer.jpg";
var curIdx=0;
var maxIdx=1;
var adDuration=5000;
var t=null;
function InitPromo() {
	document.getElementById('mainBanner').innerHTML='<img src="'+imgs[curIdx].src+'" border="0" alt=""/>';	
	t=setTimeout("toggleImage('next')",adDuration);
}

function toggleImage(dir) {
	switch (dir){
		case 'prev':
			curIdx--;
			if(curIdx <0) curIdx=maxIdx;
			break;
		case 'next':
			curIdx++;
			if (curIdx>maxIdx) curIdx=0;
			break;
	}
	document.getElementById('mainBanner').innerHTML='<img src="'+imgs[curIdx].src+'" border="0" alt=""/>';
	t=setTimeout("toggleImage('next')",adDuration);
}