I had to do something like this just now. I ended up doing:
function newWaitImg(id) {
var img = {
"id" : id,
"state" : "on",
"hide" : function () {
$(this.id).hide();
this.state = "off";
},
"show" : function () {
$(this.id).show();
this.state = "on";
},
"toggle" : function () {
if (this.state == "on") {
this.hide();
} else {
this.show();
}
}
};
};
.
.
.
var waitImg = newWaitImg("#myImg");
.
.
.
waitImg.hide(); / waitImg.show(); / waitImg.toggle();