if (document.getElementById){ //DynamicDrive.com change
	document.write('<style type="text/css">\n')
	document.write('.submenu{display: none;}\n')
	document.write('</style>\n')
}
function SwitchMenu(obj){
	if(document.getElementById){
		var el = document.getElementById(obj);
		var ar = document.getElementById("masterdiv").getElementsByTagName("span"); //DynamicDrive.com change
		if(el.style.display != "block"){ //DynamicDrive.com change
			for (var i=0; i<ar.length; i++){
					if (ar[i].className=="submenu") //DynamicDrive.com change
						ar[i].style.display = "none";
			}
			el.style.display = "block";
		}
		else{
			el.style.display = "none";
		}
	}
}

function checkUsername(keyEvent)
{
	//alert("fsdf");
	
  var targetDiv = document.getElementById("targetDiv");
  targetDiv.innerHTML = "<div></div>";
   var input = document.getElementById("username");
   var number = document.getElementById("number");
	
  if (input.value) {
	  //alert(input.value);
    getData("teacher-ranking.php?qu="+input.value+";"+number.value);
  }
 if (number.value) {
    getData("teacher-ranking.php?qu=" + number.value+";"+input.value);
  }
}
function checknumber(keyEvent)
{
  var targetDiv = document.getElementById("targetDiv");
  targetDiv.innerHTML = "<div></div>";
   var input = document.getElementById("username");
   var number = document.getElementById("number");
	
 if (input.value) {
	  //alert(input.value);
    getData("teacher-ranking.php?qu="+input.value+";"+number.value);
  }
 if (number.value) {
    getData("teacher-ranking.php?qu=" + number.value+";"+input.value);
  }
}


function getData(dataSource)
{
  var XMLHttpRequestObject = false;
  if (window.XMLHttpRequest) {
    XMLHttpRequestObject = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    XMLHttpRequestObject = new
      ActiveXObject("Microsoft.XMLHTTP");
  }

  if(XMLHttpRequestObject) {
    XMLHttpRequestObject.open("GET", dataSource);

    XMLHttpRequestObject.onreadystatechange = function()
    {
      if (XMLHttpRequestObject.readyState == 4 &&
        XMLHttpRequestObject.status == 200) {
       
            var targetDiv =
              document.getElementById("targetDiv");

            targetDiv.innerHTML =
              "<div class='targetDiv'>"+XMLHttpRequestObject.responseText+"</div>";
      }else{
		   var targetDiv =
              document.getElementById("targetDiv");

            targetDiv.innerHTML =
              "<div class='targetDiv'><font class='errorText'>Wait....</font></div>";
	  }
    }
    XMLHttpRequestObject.send(null);
  }
}
/*Ajax for selectbox*/
function getajaxdata(str)
{
	if (window.XMLHttpRequest)
  			{
  				// code for IE7+, Firefox, Chrome, Opera, Safari
  				xmlhttp=new XMLHttpRequest();
  			}
			else if (window.ActiveXObject)
  			{
  				// code for IE6, IE5
  				xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  			}
			else
  			{
  				alert("Your browser does not support XMLHTTP!");
  			}
  
            document.getElementById("all").style.display = "none";
			var url="getAjax.php";
	        var arg="id="+str;

			xmlhttp.open("POST",url);
			xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			xmlhttp.send(arg);
		
			xmlhttp.onreadystatechange=function()
			{
				if(xmlhttp.readyState==4)
  				{
  					var str=xmlhttp.responseText;
					document.getElementById('insert_ajax_data').innerHTML=str;
			
  				}
			}	
}
/*Ajax for selectbox Ends*/