OpenLayers.Util.setHandlerStyle = function (styleToApply,handler){
   OpenLayers.Util.extend(handler.style, styleToApply);
};
OpenLayers.Util.switchFond = function(idvisible){
	for(var i=0;i<fondsPlan.length;i++){
		if(i == idvisible){
			fondsPlan[i].setVisibility(true);
			fondsPlan[i].setOpacity(slide.poscurrent/100);
			slide.layer =  fondsPlan[i];
		}else fondsPlan[i].setVisibility(false);	
	}	
}