var tabs = new Array();

function set_tab(x) {
	for(i=0; i<tabs.length; i++) {
		if(i==x)
			document.getElementById('tab_'+tabs[i]).style.display = 'block';
		else
			document.getElementById('tab_'+tabs[i]).style.display = 'none';
	}
}

function init_tabs() {
	active = 0;
	urlparts = document.URL.split('#');
	if(!urlparts[1])
		urlparts[1] = '';
	for(i=0; i<document.getElementsByTagName('div').length; i++) {
		if(document.getElementsByTagName('div')[i].id.substring(0, 4)=='tab_') {
			tabs[tabs.length] = document.getElementsByTagName('div')[i].id.substr(4);
			if(tabs[tabs.length-1]==urlparts[1])
				active = tabs.length-1;
		}
	}
	set_tab(active);
}