var IsiPhone = navigator.userAgent.indexOf("iPhone") != -1;
var IsiPod = navigator.userAgent.indexOf("iPod") != -1 ;
var IsiPad = navigator.userAgent.indexOf("iPad") != -1 ;
var IsiPhoneOS = IsiPhone || IsiPad || IsiPod ;
var tumblrAutoPager = {
	url:"http://proto.jp/",
	ver:"0.1.7",
	rF:true,
	gP:{},
	pp:null,
	ppId:"",
	LN:location.hostname,
	init:function() {
	
//	if($("autopagerize_icon") || IsiPhoneOS) return;
	
	var tAP=tumblrAutoPager;
	var p=1;
	var lh=location.href;
	var lhp=lh.lastIndexOf("/page/");
	var lht=lh.lastIndexOf("/tagged/");
	if(lhp != -1) {
		p=parseInt(lh.slice(lhp+6));
		tAP.LN=lh.slice(7,lhp);
	} else if(lht!=-1) {
		tAP.LN=lh.slice(7);
		if(tAP.LN.slice(tAP.LN.length-1)=="/") tAP.LN=tAP.LN.slice(0,tAP.LN.length-1);
	} else if("http://"+tAP.LN+"/"!=lh) {
		return;
	};
	
	var gPFncs=[];
	
	gPFncs[0] = function(aE) {
		var r=[];
		for(var i=0,l=aE.length;i<l;i++) {
			if(aE[i].className=="autopagerize_page_element") {
				r=gCE(aE[i]);
				break;
			}
		}
		return r;
	};
	
	gPFncs[1] = function(aE) {
		var r=[];
		for(var i=0,l=aE.length;i<l;i++) {
			var arr = aE[i].className?aE[i].className.split(" "):null;
			if(arr) {
				for(var j=0;j<arr.length;j++) {
					arr[j] == "post" ? r.push(aE[i]):null;
				}
			}
		}
		return r;
	};
	
	gPFncs[2] = function(aE) {
		var r=[];
		var tmpId=tAP.ppId?[tAP.ppId]:["posts","main","container","content","apDiv2","wrapper","projects","feed"];
		for(var i=0,l=aE.length;i<l;i++) {
			for(var j=0;j<tmpId.length;j++) {
				if(aE[i].id==tmpId[j]) {
					r=gCE(aE[i]);
					tAP.ppId=aE[i].id;
					break;
				}
			}
		}
		return r;
	};
	
	for(var i=0; i<gPFncs.length; i++) {
		var getElems=gPFncs[i](document.body.getElementsByTagName('*'));
			if(getElems.length) {
				tAP.gP=gPFncs[i];
				tAP.pp=getElems[0].parentNode;
				break;
			}
		}
		function gCE(pElem) {
			var r=[];
			for(var i=0, l=pElem.childNodes.length; i<l; i++) {
				r.push(pElem.childNodes.item(i))
			}
			return r;
		}
		if(!tAP.pp) {
			return;
		}
		sendRequest.README = {license:'Public Domain',url:'http://jsgt.org/lib/ajax/ref.htm',version:0.516,author:'Toshiro Takahashi'};
		
		function chkAjaBrowser() {
			var A,B=navigator.userAgent;
			this.bw = { safari:((A=B.split('AppleWebKit/')[1])?A.split('(')[0].split('.')[0]:0)>=124,
						konqueror:((A=B.split('Konqueror/')[1])?A.split(';')[0]:0)>=3.3,
						mozes:((A=B.split('Gecko/')[1])?A.split(' ')[0]:0)>=20011128,opera:(!!window.opera)&&((typeof XMLHttpRequest)=='function'),
						msie:(!!window.ActiveXObject)?(!!createHttpRequest()):false
					};
			return (this.bw.safari||this.bw.konqueror||this.bw.mozes||this.bw.opera||this.bw.msie)
		}
		function createHttpRequest() {
			if(window.XMLHttpRequest) {
				return new XMLHttpRequest()
			} else {
				if(window.ActiveXObject) {
					try {
						return new ActiveXObject('Msxml2.XMLHTTP')
					} catch(B) {
					try { return new ActiveXObject('Microsoft.XMLHTTP')
					} catch(A) {
						return null
					}
				}
			} else {
				return null
			}
		}
	};
	function sendRequest(E,R,C,D,F,G,S,A) {
		var Q=C.toUpperCase()=='GET',H=createHttpRequest();
		if(H==null) {
			return null
		}
		if((G)?G:false) {
			D+=((D.indexOf('?')==-1)?'?':'&')+'t='+(new Date()).getTime()
		}
		var P = new chkAjaBrowser(),L=P.bw.opera,I=P.bw.safari,N=P.bw.konqueror,M=P.bw.mozes;
		if(typeof E=='object') {
			var J=E.onload;
			var O=E.onbeforsetheader
		} else {
			var J=E;
			var O=null
		}
		if(L||I||M) {
			H.onload = function() {
				J(H);
				H.abort()
			}
		} else {
			H.onreadystatechange = function() {
				if(H.readyState==4) {
					J(H);
					H.abort()
				}
			}
		}
		R=K(R,D);
		if(Q) {
			D+=((D.indexOf('?')==-1)?'?':(R=='')?'':'&')+R
		}
		H.open(C,D,F,S,A);
		if(!!O) {
			O(H)
		}
		B(H);
		H.send(R);
		function B(T) {
			if(!L||typeof T.setRequestHeader=='function') {
				T.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8')
			}
			return T
		}
		function K(X,V) {
			var Z=[];
			if(typeof X=='object') {
				for(var W in X) {
					Y(W,X[W])
				}
			} else {
				if(typeof X=='string') {
					if(X=='') {
						return''
					} if(X.charAt(0) == '&') {
						X=X.substring(1,X.length)
					}
					var T=X.split('&');
					for(var W=0; W<T.length; W++) {
						var U=T[W].split('=');
						Y(U[0],U[1])
					}
				}
			}
			function Y(b,a) {
				Z.push(encodeURIComponent(b)+'='+encodeURIComponent(a))
			}
			return Z.join('&')
		}
		return H
	}
	function addNextPage(oj) {
		if(oj.status==404) {
			tAP.remainFlg=false;
			return;
		}
		var d=document.createElement("div");
		d.innerHTML=oj.responseText;
		var posts=tAP.gP(d.getElementsByTagName("*"));
		if(posts.length<2) {
			tAP.rF=false;
			return;
		}
		///////////
		//var hr=document.createElement("hr");
		//hr.className="tumblrAutoPager_page_separator";
		//tAP.pp.appendChild(hr);
		//d=document.createElement("div");
		//d.className="tumblrAutoPager_page_info";
		//d.innerHTML="<p style='float:left'><a href=http://"+tAP.LN+"/page/"+p+">/page/"+p+"</a></p>"+"<p style='float:right;text-align:right'><a href='javascript:tumblrAutoPager.switchAutoPage()' class='tAP_switch' style='font-size:80%'>AutoPage[OFF]</a><br />"+"<span style='font-size:80%'>by:<a href='http://proto.jp/2009/02/01/tumblrautopager/'>proto.jp</a></span></p><br style='clear:both' />";
		//tAP.pp.appendChild(d);
		
		for(var i=0;i<posts.length;i++) {
			tAP.pp.appendChild(posts[i]);
		}
		var footer=$("footer");
		footer?footer.parentNode.appendChild(footer):null;
		tAP.rF=true;
		setTimeout(repositionPosts,500);
	}
	watch_scroll();
	function watch_scroll() {
		var d = document.compatMode == "BackCompat" ? document.body : document.documentElement;
    //var useScroll = (IsiPhoneOS) ? panYPosition : (d.scrollTop || document.body.scrollTop);
    var useScroll = d.scrollTop || document.body.scrollTop;
		var r = d.scrollHeight - d.clientHeight - useScroll;
		if(r < d.clientHeight * .5 && tAP.rF) {
			tAP.rF = false;
      p++;
			sendRequest(addNextPage,"","GET","http://"+tAP.LN+"/page/"+p,true);
		}
		setTimeout(arguments.callee,200);
	};
	function $(id) {
		return document.getElementById(id)
	};
	}, switchAutoPage:function() {
		this.rF=!this.rF;
		var aE=document.getElementsByTagName('*');
		for(var i=0,l=aE.length;i<l;i++) {
			if(aE[i].className=="tAP_switch") {
				aE[i].firstChild.nodeValue=this.rF?"AutoPage[OFF]":"AutoPage[ON]";
			}
		}
	}
};

//var panYStart = 0;
//var panYChange = 0;
//var panYPosition = 0;
//
//function panStart (event) {
//  panYStart = event.touches[0].pageY;
//}
//
//function panMove (event) {
//  if(panYStart - event.touches[0].pageY > 30) {
//    panYChange = panYStart - event.touches[0].pageY;
//  }
//}
//
//function panEnd (event) {
//  panYPosition += panYPosition + panYChange;
//  //console.log(panYPosition);
//}
//
//var panDiv = document.getElementById("container");
//panDiv.addEventListener("touchstart", panStart, false);
//panDiv.addEventListener("touchmove", panMove, false);
//panDiv.addEventListener("touchend", panEnd, false);

if(!IsiPhoneOS) {
	window.addEventListener?window.addEventListener('load', tumblrAutoPager.init, false):window.attachEvent?window.attachEvent("onload", tumblrAutoPager.init):window.onload = tumblrAutoPager.init;
}