/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*-----------------------------------------------------------------------------------------------*/

//Browser detect script origionally created by Peter Paul Koch at http://www.quirksmode.org/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

function initialize(){
	getBrowserInfo();
}

function Pos(el, left){
    var val=0;
    while(el != null) {
      val += el["offset"+(left?"Left":"Top")];
      el = el.offsetParent;
    }
	return val;
}

function Muestra(id,tipo,op,mediaId,anchoFoto, altoFoto,titulo){
	var alto=document.body.offsetHeight;		
	$('#overlay').show();
	$('#overlay').css({height:alto+'px'});
	$('#'+id).show();
	
	var altoObj=anchoObj=x=y=dd=0;
	var obj = document.getElementById(id);
	altoObj=parseInt(obj.clientHeight,10);
	anchoObj=parseInt(obj.clientWidth,10);
//	var dd=(window.pageYOffset+(alto/2));
	if(window.pageYOffset){
		dd=(window.pageYOffset+(altoObj/2));
	} else {
		dd=(Math.max(document.body.scrollTop,document.documentElement.scrollTop)+(altoObj/2));
	}
	obj.style.top=dd+"px";
	
	x=Pos(obj, true);
	y=Pos(obj, false);
	
	if(anchoFoto>=anchoObj){
		x=x-(Math.round((anchoFoto-anchoObj)/2));
	} else {
		x=x-(Math.round((anchoObj-anchoFoto)/2));
	}
	if(altoFoto>=altoObj){
		y=y-(Math.round((altoFoto-altoObj)/2));
	} else {
		y=y-(Math.round((altoObj-altoFoto)/2));
	}
	if(y<0) {y=0;}
	if(x<0) {x=0;}
	var url="/backend/get_media.php?op="+op;
	$.get(url,{"tipo":tipo,"x":x,"y":y,"anchoFoto":anchoFoto,"altoFoto":altoFoto,"id":id,"op":op,"mediaId":mediaId,"titulo":titulo},
		function(htm){
			$('#'+id).html(htm);
//			$('#'+id).css({width:anchoFoto, height:altoFoto, left:x});
		}
	);
}
function Quita(id){
	$('#overlay').hide();
	$('#'+id).html('&nbsp;');
	$('#'+id).hide();
	$('#'+id).css({width:"20%", height:"20%", top:"40%", left:"40%"});
}


initialize();