jQuery().ready(function(){
	
	var button_names = new Array("btn_confirm", 
									"btn_toggle", 
									"btn_delete_selected", 
									"btn_save_draft", 
									"btn_send", 
									"btn_merge", 
									"btn_upload",
									"btn_cancel",
									"btn_yes",
									"btn_no",
									"btn_save_sort",
									"btn_change_password",
									"btn_update");
	
	for (var i = 0; i < button_names.length; i++)
	{
		bName = button_names[i]; 
		 
		if ($("." + bName) != null) {
			 $("." + bName).bind("mousedown", function(){
			   $(this).attr("src", "images/" + $(this).attr("class") + "_down.jpg")
			 });
		
			 $("." + bName).bind("mouseup", function(){
			   $(this).attr("src", "images/" + $(this).attr("class") + "_up.jpg")
			 });
			 
			 $("." + bName).bind("mouseout", function(){
			   $(this).attr("src", "images/" + $(this).attr("class") + "_up.jpg")
			 });
			 
			 $("." + bName).bind("mouseover", function(){
			   $(this).attr("src", "images/" + $(this).attr("class") + "_hover.jpg")
			 });
		 }
	}
	 
});