// General Functions
function ExecAjax(url,parameters,func_create,func_success,func_complete,func_error,async){
	var rand = Math.round(Math.random() * 2000);
	parameters=rand+"&"+parameters;
		
	if(async!=true){async=false;}else{async=true;}
	
	var result = new String();
	var objetoAjax = new Ajax.Request(
		url, 
		{
			method: 'GET', 
			encoding: 'ISO-8859-1',
			parameters: parameters, 
			onCreate : function(){if(func_create) eval(func_create);},
			onSuccess : function(){if(func_success) eval(func_success);},
			onComplete: function(transport){
				//alert("Ajax Result: "+transport.responseText);
				eval(func_complete);
			},
			onFailure:  function(){
				if(func_error==null){
					alert("Error: Action has not been executed correctly.");
				} else {
					eval(func_error);
				}
			},
			asynchronous : async
		});
	return result;
}

function addFavCookie(video_id,update){
	document.cookie ='favorite_videos['+video_id+']='+video_id+'; expires=Tue, 30 Apr 2030 23:59:59 UTC; path=/';	
	if(update){
		$('favstar_off_'+video_id).hide();
		$('favstar_on_'+video_id).show();
	}
	alert(labels['video_added_to_favorites']);
}

function deleteFavCookie(video_id,update){
	document.cookie ='favorite_videos['+video_id+']=""; expires=Wed, 25 Apr 2000 00:00:00 UTC; path=/';	
	if(update){
		$('favstar_on_'+video_id).hide();
		$('favstar_off_'+video_id).show();	
	}
	alert(labels['video_removed_from_favorites']);
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}