The scripting half of the pfp insanity

fun.js

savestring = "*insert Base64 junk here*";

saving=true;
document.getElementById('button_save').style.background='#888';
statusdiv.innerHTML='Saving the painting';
(SaveObj=new XMLHttpRequest()).open('POST', 'includes/ajax_dsipaint_save.php', true);
SaveObj.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
SaveObj.send ('data='+savestring);
SaveObj.onreadystatechange=function(){
	if(SaveObj.readyState==4){
		statusdiv.innerHTML=SaveObj.responseText;
		saving=false;
		document.getElementById('button_save').style.background='#00f';
	}
}