function ChaineRemplace(expr,a,b) 
{
  var i=0
   while (i!=-1) {
      i=expr.indexOf(a,i);
      if (i>=0) {
         expr=expr.substring(0,i)+b+expr.substring(i+a.length);
         i+=b.length;
      }
   }
   return expr
}

function OuvreAide(sURLAide)
{
	window.open(sURLAide,'RiveHelp','scrollbars=1,toolbar=no,location=no,status=no,menubar=no,dependent,titlebar=yes,alwaysRaised,width=515,height=221,resizable=yes,top=0');
}


function PopUpCentre(sURL,sNomFen,iFenLarg,iFenHaut,sOptions)
{
	var haut=(screen.height-iFenHaut)/2;
	var Gauche=(screen.width-iFenLarg)/2;
	if (sOptions=='')
		sOptions='scrollbars=1,toolbar=no,location=no,status=no,menubar=no,dependent,titlebar=yes,alwaysRaised,resizable=yes,top=0';
	window.open(sURL,sNomFen,"top="+haut+",left="+Gauche+",width="+iFenLarg+",height="+iFenHaut+","+sOptions);
}