if (!xajaxRequestManager) {
    var xajaxRequestManager = function () {
        return {
            OverlayManager : null,
            showProcessMessage : function (message, property) {
                if ( !this.OverlayManager ) this.OverlayManager = new YAHOO.widget.OverlayManager();
                if ( property.id !== undefined ) var id = property.id;
                else var id = "dialog";
                if ( property.fixedcenter === undefined )           property.fixedcenter = true;
                if ( property.visible === undefined )               property.visible = false;
                if ( property.width === undefined )                 property.width = "500px";
                if ( property.constraintoviewport === undefined )   property.constraintoviewport = true;
                if ( property.duration === undefined )              property.duration = 0.4;
                if ( property.showtitle === undefined )             property.showtitle = true;
                if ( property.underlay === undefined )              property.underlay = "none";
                if ( property.reloadAfterHide === undefined )       property.reloadAfterHide = false;
                var maxIndex = 0;
                for(var i=0; i<this.OverlayManager.overlays.length; i++) {
                    maxIndex = Math.max(maxIndex, this.OverlayManager.overlays[i].cfg.getProperty("zIndex"));
                }
                maxIndex = maxIndex + 100;

                if ( xajaxRequestManager.OverlayManager.find(id) ) {
                    var dialog = xajaxRequestManager.OverlayManager.find(id);
                    dialog.cfg.setProperty("zIndex", maxIndex);
                    if (message) {
                        dialog.setBody(message);
                        if ( property.showtitle == true ) {
                            if ( property.title === undefined ) {
                                dialog.setHeader('<div class="tl"></div>&nbsp;<div class="tr"></div>');
                            } else {
                                dialog.setHeader('<div class="tl"></div>'+property.title+'<div class="tr"></div>');
                            }
                        }
                    }
                    dialog.render();
                } else {
                    var dialog = new YAHOO.widget.Dialog(id, property);
                    dialog.setBody(message);
                    if ( property.showtitle == true ) {
                        if ( property.title === undefined ) {
                            dialog.setHeader('<div class="tl"></div>&nbsp;<div class="tr"></div>');
                        } else {
                            dialog.setHeader('<div class="tl"></div>'+property.title+'<div class="tr"></div>');
                        }
                    }
                    dialog.cfg.setProperty("zIndex", maxIndex);
                    dialog.render(document.body);
                    this.OverlayManager.register(dialog);
                    
                }
                /**
                 * if it needs to reload page after close button is clicked
                 * @author Artem Sukharev
                 */
                if ( property.reloadAfterHide == true ) {
	                YAHOO.util.Event.addListener(dialog.close, "click", function(){ 
	                	document.location.reload();
	                }, dialog);
        		}                
                dialog.show();
            }
        };
    }();
}