function changePage() {
	window.location.replace('main.html');
}
function init() {
	document.writeln('<img src="/images/vertical.gif"><br>');
}

    function returnObjById(id) { 
        if (document.getElementById) 
            var returnVar = document.getElementById(id); 
        else if (document.all) 
            var returnVar = document.all[id]; 
        else if (document.layers) 
            var returnVar = document.layers[id]; 
        return returnVar; 
    } 

    function toggle(id,state) {
        var obj=returnObjById(id);

        if(state=="on") {
	        obj.style.display="block";
        } else {
	        obj.style.display="none";
        }
    }