function mosaic_get_faces(move,obj){
	var center_x = document.getElementById('mosaic_center_x').innerHTML;
	var center_y = document.getElementById('mosaic_center_y').innerHTML;
	var cols = document.getElementById('mosaic_cols').innerHTML;
	var rows = document.getElementById('mosaic_rows').innerHTML;
	document.getElementById('mosaic').innerHTML = '';
	
	if(move == 'home'){
		var center_x = document.getElementById('mosaic_org_x').innerHTML;
		var center_y = document.getElementById('mosaic_org_y').innerHTML;
	}
	
	var url=SITEURL+"/libs/ajax/ajax_mosaic_get_faces.php?move="+move+"&center_x="+center_x+"&center_y="+center_y+"&cols="+cols+"&rows="+rows;
	xmlHttp=GetXmlHttpObject(mosaic_get_faces_helper);//fails on safari 1
	xmlHttp.open("GET", url , true);
	xmlHttp.send(null);
}
function mosaic_get_faces_helper() { 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
		var return_text = xmlHttp.responseText;
		var return_text2 = return_text.split("[SPLIT]");
		document.getElementById('mosaic_center_x').innerHTML = return_text2[0];
		document.getElementById('mosaic_center_y').innerHTML = return_text2[1];
		document.getElementById('mosaic').innerHTML = return_text2[2];
	} 
}