var fileName = new Array();
var MenuName = new Array();
var ImageName = new Array();
//================================================//

fileName[0]  = "b5_index";
MenuName[0]  = "m1";
ImageName[0] = "images/b5_menu_home_a.gif";

fileName[1]  = "b5_about,b5_about1,b5_about2";
MenuName[1]  = "m2";
ImageName[1] = "images/b5_menu_about_a.gif";

fileName[2]  = "b5_scope,en_scope1,b5_scope2,b5_scope3,b5_scope4,b5_scope5,b5_scope6,b5_scope7,b5_scope8";
MenuName[2]  = "m3";
ImageName[2] = "images/b5_menu_scope_a.gif";

fileName[3]  = "b5_e-newsletter";
MenuName[3]  = "m4";
ImageName[3] = "images/b5_menu_enewsletter_a.gif";

fileName[4]  = "b5_news";
MenuName[4]  = "m5";
ImageName[4] = "images/b5_menu_news_a.gif";

fileName[5]  = "b5_contact";
MenuName[5]  = "m6";
ImageName[5] = "images/b5_menu_contact_a.gif";

fileName[6]  = "b5_enquiry";
MenuName[6]  = "m7";
ImageName[6] = "images/b5_menu_enquiry_a.gif";

fileName[7]  = "b5_resources,b5_resources1,b5_resources1_arch,b5_resources2,b5_resources2_arch,b5_resources3_arch";
MenuName[7]  = "m8";
ImageName[7] = "images/b5_menu_resources_a.gif";
//================================================//

function changemenu(){

	var s = getFileName();
	var i;
	var k;
	for (i = 0; i < fileName.length ; i ++)
	{
		var memuArray = fileName[i].split(",");
		for (k = 0; k < memuArray.length; k++)
		{
			if (memuArray[k] == s)
			{
				var imgObj = eval("document."+MenuName[i]);
				imgObj.src = ImageName[i];
				return;
			}
		}
	}
}

function getFileName(){

	var k = window.location.href;
	var r = k.indexOf(".asp");
	var t = k.lastIndexOf("/");
	var s = k.substring(t+1, r);

	return s;

}
changemenu();