// JavaScript Document

$(function() {
	function getFilename(filename) {
		set_filename = '';
		set_array = filename.split('/');
		if(set_array[set_array.length - 1].match(/\?/) != -1) {
			remove_q = set_array[set_array.length - 1].split('?');
			set_filename = remove_q[0];
		} else {
			set_filename = set_array[set_array.length - 1];
		}
		set_filename = set_filename.replace(/.php/, '');
		return set_filename;
	}
	function mouse_action(event) {
		src = $(this).attr('src');
		//alert(src);
		//alert(get_filename)
		//alert(src.match(get_filename));
		if(src.match(get_filename) == null) {
			//alert('test');
			if(event.type == 'mouseover') {
				src_over = src.replace(/.gif/, '_over.gif')
				src_over = src_over.replace(/_over_over.gif/, '_over.gif');
				$(this).attr('src', src_over);
				
			} else {
				
				src_default = src.replace(/_over.gif/, '.gif');
				src_default = src_default.replace(/_over_over.gif/, '_over.gif');
				$(this).attr('src', src_default);
			}	
		}
		
	}
	
	filename = location.href
	if(filename.substr(-1, 1) == '/') {
		filename += filename + 'index.php';	
	}
	get_filename = getFilename(filename);
	
	//if($('#main_navi img').attr('src').match(get_filename) == false) {
		$('#main_navi img')
		.bind('mouseover', mouse_action)
		.bind('mouseout', mouse_action);	
	//}
	
});