var checkedElements = new Array();
var markedElements = new Array();

showInfoElement=function(id){
	var elements = document.getElementsByClassName("short_description");
	for(var i=0; i<elements.length; i++){
		elements[i].hide();
	}
	$('short_description_'+id).show();

	var elements = document.getElementsByClassName("hide_slideshow");
	for(var i=0; i<elements.length; i++){
		elements[i].hide();
	}
	$('hide_slideshow_'+id).show();
	return false;
}

markElement=function(mark_id){
	
	if(checkMarkedElements(mark_id)==1){
		markedElements.push(mark_id);
		$('mark_'+mark_id).show();
		$('unmark_'+mark_id).hide();
	}else{
		var pos = markedElements.indexOf(mark_id);
		removed = markedElements.splice(pos, 1);
		$('mark_'+mark_id).hide();
		$('unmark_'+mark_id).show();
	}
	
	$('marked_count').innerHTML=markedElements.length;
}

checkMarkedElements=function(id){
	var ret = 1;
	for(var i=0; i<markedElements.length; i++){
		if(markedElements[i]==id) ret = 0;
	}
	return ret;
}

slideshowElements=function(){
	var ids = new Array(256,257,258,259,260,262,263,264,265,266);
	var num = ids[randomNumber(ids.length-1)];
	showInfoElement(num);
	setTimeout("slideshowElements()", 5000);
}

startSlideshowElements=function(){
	var ids = new Array(256,257,258,259,260,262,263,264,265,266);
	setTimeout("slideshowElements()", 1000);
}

randomNumber=function(num) {
   return Math.floor(Math.random()*(num+1));
}

showPresentation=function(url, name){
	//new Effect.Appear('presentation_over');
	$('presentation_over').style.display=''
	$('presentation_frame').src=url;
	$('presentation_name').innerHTML=name;
	if($('skills_player').style.display!='none'){
		$('skills_player').innerHTML='';
		$('skills_player').style.display='none';
	}
	return false;
}

loadVideoFile=function(url, w, h, showHide){
	if(w==undefined) w=675;
	if(h==undefined) h=544;
	if(showHide==undefined) showHide=1;

	if($('presentation_over').style.display!='none') $('presentation_over').style.display='none';
	if($('skills_player').style.display=='none'){
		//new Effect.Appear('skills_player');
		$('skills_player').style.display=''
	}
	$('skills_player').innerHTML=url;
	
	var playerDiv = document.getElementById('skills_player');
	var s3 = new SWFObject("/swf/mp3player.swf", "swfplayer", w, h, "7");
	
	s3.addVariable("file",url);
	s3.addVariable("backcolor","0x00000");
	s3.addVariable("frontcolor","0xEECCDD");
	s3.addVariable("lightcolor","0xCC0066");
	s3.addVariable("width",w);
	s3.addVariable("height",h);
	s3.addVariable("autostart","true");
	s3.addVariable("repeat","list");
	s3.write(playerDiv);
	if(showHide==1){
	$('site_boxes').hide();
	$('skills_over').show();
	}

}