function show(c) {
        if (document.getElementById && document.getElementById(c)!= null) {
                node = document.getElementById(c).style.display='';
        } else if (document.layers && document.layers[c]!= null) {
                document.layers[c].display = '';
        } else if (document.all) {
                document.all[c].style.display = '';
        }
}

function hide(c) {
        if (document.getElementById && document.getElementById(c)!= null) {
                node = document.getElementById(c).style.display='none';
        } else if (document.layers && document.layers[c]!= null) {
                document.layers[c].display = 'none';
        } else if (document.all) {
                document.all[c].style.display = 'none';
        }
}

function toggle(c) {
        if (document.getElementById && document.getElementById(c)!= null) {
                if(document.getElementById(c).style.display=='none') {
                        document.getElementById(c).style.display='';
			return "visible";
                } else {
                        document.getElementById(c).style.display='none'
			return "hidden";
                }
        } else if (document.layers && document.layers[c]!= null) {
                if(document.layers[c].display=='none') {
                        document.layers[c].display='';
			return "visible";
                } else {
                        document.layers[c].display='none';
			return "hidden";
                }
        } else if (document.all) {
                if(document.all[c].style.display=='none') {
                        document.all[c].style.display='';
			return "visible";
                } else {
                        document.all[c].style.display='none';
			return "hidden";
                }
        }
}

function get_div(c) {
	var node;
        if (document.getElementById && document.getElementById(c)!= null) {
                node = document.getElementById(c);
        } else if (document.layers && document.layers[c]!= null) {
                node = document.layers[c];
        } else if (document.all) {
                node = document.all[c];
        }
	return node;
}

function jump_to(url) {
	location.href=url;
}