//Se encarga de chequear-deschequear un grupo de checkbox con el mismo "name" 
//a partir de otro checkbox selector
function HeaderCheck( selector, checkboxArray ){
	
	var chkState = selector.checked;
	
	if ( checkboxArray ){
		
		if ( checkboxArray.length ){
	
			for( i=0; i < checkboxArray.length; i++ ){
				checkboxArray[i].checked = chkState;
			}
		
		} else {
		
			checkboxArray.checked = chkState;
		
		}
	
	}
}

//Obre un op up centrat a la pantalla
function OpenCenteredWindow( url, windowName, width, height )
{
	LeftPosition = ( screen.width ) ? ( screen.width - width ) /2 : 0; 
	TopPosition = ( screen.height ) ? ( screen.height - height ) /2 : 0; 
	window.open( url , windowName, 'height=' + height +', width=' + width +', scrollbars=Yes, menubar=no, screenX=110, left='+LeftPosition+', screenY=10, top=' + TopPosition ); 
}

function OpenCenteredControlledWindow( url, windowName, width, height )
{
	LeftPosition = ( screen.width ) ? ( screen.width - width ) /2 : 0; 
	TopPosition = ( screen.height ) ? ( screen.height - height ) /2 : 0; 
	
	var w = window.open( url , windowName, 'height=' + height +', width=' + width +', scrollbars=Yes, menubar=no, screenX=110, left='+LeftPosition+', screenY=10, top=' + TopPosition ); 
	return w;
}

//Mostra una div
function ShowDiv( divSrc )
{
	divSrc.style.display = "block";
}

//Amaga una div
function HideDiv( divSrc )
{
	divSrc.style.display = "none";
}

//Afegeix a favoritos
function AddBookmark( url, text, errorMessage )
{
	//Hi ha possibilitat de fer try i catch, però és a partir de javascript 1.4 ...
	if ( document.all )
	{
		window.external.AddFavorite( url, text );
	}
	else
	{
		alert( errorMessage );
	}
}

//Imprimeix la pàgina actual
function Custom_Print() 
{ 
	window.print(); 
}

function OpenJukeBox( url )
{
	var jb = OpenCenteredControlledWindow( url, 'JukeBox', '335', '610' );
	jb.resizeTo( 345, 610 );
	
	//if ( document.getElementById('mediaplayer') != null && document.getElementById('mediaplayer') != '' )
	//{
		//debugger;
	//	document.getElementById('mediaplayer').outerHTML = '';
	//}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}