var agt=navigator.userAgent.toLowerCase();

var is_major = parseInt(navigator.appVersion);

var is_minor = parseFloat(navigator.appVersion);

var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

//var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );

function viewport() {
    this.windowX = (document.documentElement && document.documentElement.clientWidth) || window.innerWidth || self.innerWidth || document.body.clientWidth;
    this.windowY = (document.documentElement && document.documentElement.clientHeight) || window.innerHeight || self.innerHeight || document.body.clientHeight;
    this.scrollX = (document.documentElement && document.documentElement.scrollLeft) || window.pageXOffset || self.pageXOffset || document.body.scrollLeft;
    this.scrollY = (document.documentElement && document.documentElement.scrollTop) || window.pageYOffset || self.pageYOffset || document.body.scrollTop;
    this.pageX = (document.documentElement && document.documentElement.scrollWidth) ? document.documentElement.scrollWidth : (document.body.scrollWidth > document.body.offsetWidth) ? document.body.scrollWidth : document.body.offsetWidth;
    this.pageY = (document.documentElement && document.documentElement.scrollHeight) ? document.documentElement.scrollHeight : (document.body.scrollHeight > document.body.offsetHeight) ? document.body.scrollHeight : document.body.offsetHeight;
}

function getWindowSize() {

	var myWidth = 0, myHeight = 0;

	if( typeof( window.innerWidth ) == 'number' ) {

		//Non-IE

		//myWidth = window.innerWidth;

		myWidth = document.body.clientWidth;

		myHeight = window.innerHeight;

	} else if ( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {

		//IE 6+ in 'standards compliant mode'

		myWidth = document.documentElement.clientWidth;

		myHeight = document.documentElement.clientHeight;

	} else if ( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {

		//IE 4 compatible

		myWidth = document.body.clientWidth;

		myHeight = document.body.clientHeight;

	}

	

	return {width: myWidth, height: myHeight};



}



function $(id) {

    return document.getElementById(id);

}



var currentPhotoNR = 0;



function showPhoto( pid ) {



    currentPhotoNR = photoIDtoNR[pid];

	var view = new viewport();

	var win = getWindowSize();

	if (is_ie) {

		$('photo-layer').style.width = win.width+'px';

	}

	if (win.height > document.body.clientHeight) var layerHeight = win.height;

	else var layerHeight = document.body.clientHeight;

	$('photo-layer-bg').style.height = layerHeight+'px';

	$('photo-layer-bg').style.display = '';

	$('photo-image').src = photos[currentPhotoNR][1];

	

	var preLoad = new Image();

	preLoad.onload = function() {

 

		var top = Math.ceil((win.height - preLoad.height - 150)/2) + view.scrollY;

		if (top < 0) top = 0;

		$('photo-layer').style.top = top+'px';

		$('photo-title').innerHTML = photos[currentPhotoNR][0];

		$('photo-layer').style.display = '';
		$('photo-navigation').style.display = '';


	}

	preLoad.src = photos[currentPhotoNR][1];



}



function nextPhoto( direction ) {

   

    var newNR = currentPhotoNR + direction;

    if (newNR < 1 || newNR > photoCount) return;



	var win = getWindowSize();
	var view = new viewport();
	
	$('photo-image').src = photos[newNR][1];

	var preLoad = new Image();

	preLoad.onload = function() {



		var top = Math.ceil((win.height - preLoad.height - 150)/2) + view.scrollY;

		if (top < 0) top = 0;

		$('photo-layer').style.top = top+'px';

		$('photo-title').innerHTML = photos[newNR][0];

		currentPhotoNR = newNR;

	

	}

	preLoad.src = photos[newNR][1];



}

function hidePhoto() {

	$('photo-layer-bg').style.display = 'none';

	$('photo-layer').style.display = 'none';

}



function hide( id ) {

	

	if ($( id ).style.display != 'none') {

		$( id ).style.display = 'none';

	}

	

}



function show( id ) {



	//if ($( id ).style.display == 'none') {

		$( id ).style.display = 'block';

	//}



}



function showSinglePhoto( src, title, h1 ) {



	var win = getWindowSize();

	if (is_ie) {

		$('photo-layer').style.width = win.width+'px';

		//$('photo-layer-bg').style.width = win.width+'px';

	}

	

	if (win.height > document.body.clientHeight) var layerHeight = win.height;

	else var layerHeight = document.body.clientHeight;

	

	$('photo-layer-bg').style.height = layerHeight+'px';

	//$('photo-layer-bg').style.height = win.height+'px';

	//$('photo-layer-bg').style.width = win.width+'px';

	$('photo-layer-bg').style.display = '';

	$('photo-image').src = src;

	

	var preLoad = new Image();

	preLoad.onload = function() {



		//$('photo-image').src = src;

		$('photo-title').style.width = preLoad.width+'px';

		var top = Math.ceil((win.height - preLoad.height - 150)/2);

		if (top < 0) top = 0;

		$('photo-layer').style.top = top+'px';

		$('photo-title').innerHTML = title;
		
		if (h1) {
			$('photo-top-title').innerHTML = '<h2>'+h1+'</h2>';
		}

		$('photo-navigation').style.display = 'none';

		$('photo-layer').style.display = '';



	}

	preLoad.src = src;



}



function reply( id ) {

	$('reply_'+id).style.display = 'block';

}



function closeReply( id ) {

	$('reply_'+id).style.display = 'none';

}



/* FLOAT SELECTION */



var float_selection = "";

var selection_id = 0;



function get_selection(e, id, post_author) {

	

	var str = "";

	if (window.getSelection) {

		str = window.getSelection();

	} else if (document.getSelection) {

		str = document.getSelection();

	} else if (document.selection && document.selection.createRange) {

		var range = document.selection.createRange();

		str = range.text;

	} else {

		str = "Sorry, this is not possible with your browser.";

	}

	

	var float_paste = $("float-quote");

	

	if (str != "") {

		var coords = get_mouse_coords( e );

        float_selection = "[quote="+post_author+"]"+str+"[/quote]\n";

		selection_id = id;

		coords[0]+=5; coords[1]+=5;

		float_paste.style.left = coords[0]+"px";

		float_paste.style.top = coords[1]+"px";

		float_paste.style.display = "block";

	} else {

		float_paste.style.display = 'none';

	}

	

}



function paste_selection() {



   if (float_selection != "") {

    	

		//reply( selection_id );

		$( 'reply_field' ).value += float_selection;

		$( 'reply_field' ).focus();

        var float_paste = $("float-quote");

    	float_paste.style.display = 'none';

    	float_selection = '';

		

    } 

	

}



function get_mouse_coords(evt) {

	posx = 0;

	posy = 0;

	if (evt.pageX) return [ evt.pageX, evt.pageY ];

	else if (evt.clientX) {

   	     posx = evt.clientX + (document.documentElement.scrollLeft ?

   	     	  document.documentElement.scrollLeft :

   	     	  document.body.scrollLeft);

   	     posy = evt.clientY + (document.documentElement.scrollTop ?

   	     	  document.documentElement.scrollTop :

   	     	  document.body.scrollTop);

   	     return [posx, posy ];

	}

 	else return null;

}



function page(show, hide) {

	

	$('art-page-'+show).style.display = 'block';

	$('art-page-'+hide).style.display = 'none';

	window.scroll(0, 0);

	

}