// JavaScript Document
function activate_tab(tab_number) {
	var linkList = document.getElementById("tabs").getElementsByTagName("img");
	for (i = 0; i < linkList.length; i++) {
		var j = i + 1;
		var mytab_id = "tab"+j;
		document.getElementById(mytab_id).src = 'images/ui/hd_tabs_0'+j+'.gif';
		linkList[i].className = "tab";
	}
	for (i = 1; i < 5; i++) {
		var container_id = "container"+i;
		document.getElementById(container_id).style.display = "none";
	}
	var the_tab_id = "tab"+tab_number;
	var the_container_id = "container"+tab_number;
	document.getElementById(the_tab_id).src = 'images/ui/hd_tabs_active_0'+tab_number+'.gif';
	document.getElementById(the_tab_id).className = "tab on";
	document.getElementById(the_container_id).style.display = "block";


}

function roll_over(id, img) {
	// alert ('rollover ' + id + ' ' + img + ' ' + document.getElementById(id).className);
	if (document.getElementById(id).className != 'tab on') {
		document.getElementById(id).src = img;
	}
}
function roll_out(id, img) {
	if (document.getElementById(id).className != 'tab on') {
		document.getElementById(id).src = img;
	}
}