function showteachers(){

	var grade = document.searchf.grade.value;
	
	if (grade=='' || grade=='undefined'){
		alert("Please choose a grade");
	} else {

    	var strURL = "/teachers/viewteachers.html";
        var querystring = "grade="+grade;
	var xmlHttpReq = false;


    // Mozilla/Safari
    if (window.XMLHttpRequest) {
        xmlHttpReq = new XMLHttpRequest();
            if (xmlHttpReq.overrideMimeType) {
                xmlHttpReq.overrideMimeType('text/xml');
	    }
    }
    // IE
    else if (window.ActiveXObject) {
        xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    xmlHttpReq.open('POST', strURL, true);
    xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    xmlHttpReq.onreadystatechange = function() {
        if (xmlHttpReq.readyState == 4) {
		document.getElementById("results").innerHTML = xmlHttpReq.responseText;
        }
    }
	//alert(querystring);
    xmlHttpReq.send(querystring);

	}

}

function showCA(z,s){
tb_show('GROSSE POINTE ACADEMY', '/teachers/courses.html?'+z+'='+s+'&KeepThis=true&TB_iframe=true&height=550&width=655', null);
}

function showlist()
{

    var element;
    var modules_output;
    var i = 0;
    while (i < document.resultcourses.elements.length)
    {
        element = document.resultcourses.elements[i];
        if (element.type == "checkbox")
        {
            if (element.checked)
            {
		if (modules_output != ''){
             		modules_output += ', '+document.resultcourses.elements[i].value;
		} else {
             		modules_output += document.resultcourses.elements[i].value;
		}
            }
        }
        i++;
    }

   showCA('s', modules_output);
}

function CheckIsIE() 
{ 
if (navigator.appName.toUpperCase() == 'MICROSOFT INTERNET EXPLORER') { return true;} 
else { return false; } 
} 


function PrintThisPage() 
{ 

if (CheckIsIE() == true) 
{ 
document.printframe.focus(); 
document.printframe.print(); 
} 
else 
{ 
window.frames['printframe'].focus(); 
window.frames['printframe'].print(); 
} 

}