function loadOfferImage(path,i,cnt) {
	var img = document.getElementById('offer_image');
	var cur_btn = document.getElementById('btn' + i);
	var tmp_btn;	
	img.src = path + i + '.jpg';
	for (j=1;j<=cnt;j++){
		tmp_btn = document.getElementById('btn' + j);
		tmp_btn.style.backgroundColor = '#448f26';
	}
	cur_btn.style.backgroundColor = '#7fe021';
}


function popup(address,window_name, sizex, sizey){
   var posx = (screen.width / 2) - (sizex / 2);
   var posy = (screen.height / 2) - (sizey / 2);
   void window.open(address, window_name , 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=' + sizex + ',height=' + sizey + ',left=' + posx + ',top=' + posy);
}//function