function goto_page(page){
	//top.location = siteRoot + page;
	top.location =  top.location + page;
}

function disclaimer(){
	var page = siteRoot+'disclaimer/index.html';
	var wndis = open(page, 'disclaimer', 'scrollbars=1,resizable=0,height=480,width=560');
}

function help(help_page){
	var wnhlp = open(siteRoot+'user_guide/'+help_page+'.html', 'help', 'scrollbars=1,resizable=0,left='+ ((screen.width-640)/2) +',top='+ ((screen.height-500)/2) +',height=500,width=640');
	if(wnhlp != null) {
		wnhlp.moveBy(1,1);
		wnhlp.moveBy(-1,-1);
		wnhlp.focus();
	}
}