function clear_input(input) {
	input.value = '';
	input.onfocus = null;

}


var options = {
    toogle_flag: function(img, mode) {
    	if(img.src.indexOf('.gif') != -1) {
            	var look_for = (mode == "over") ? "_n.gif" : "_r.gif";
           	 	var replacement = (mode == "over") ? "_r.gif" : "_n.gif";
    	} else if(img.src.indexOf('.png') != -1) {
           		var look_for = (mode == "over") ? "_n.png" : "_a.png";
            	var replacement = (mode == "over") ? "_a.png" : "_n.png";
    	} else {
    		return;
    	}

        img.src = img.src.replace(look_for, replacement);
    },

    init: function() {
	//var flags = document.getElementsByTagName("img");
	var flags = $$(".rollover");
	
        for(i = 0; i < flags.length; i++) {
            flags[i].addEvent('mouseover', function() { options.toogle_flag(this, "over");  } );
			flags[i].addEvent('mouseout', function() { options.toogle_flag(this, "out");  } );
        }
    }
};


if (navigator.appName!="Microsoft Internet Explorer") {
	window.addEvent('domready', function() {
		options.init();
	});
}