var xmlHttp;

function show_data(divname, type,val,selected_val)
 { 	
 // check for blank selections
 if (val=='Select' || val=='0' || val=='') return;
 xmlHttp=GetXmlHttpObject()
 if (xmlHttp==null)
  {
  alert ("Browser does not support HTTP Request")
  return
  } 
 var url="get_ajax_data.php?type="+type+"&val="+val+"&sval="+selected_val;

if (type=='school') {
	school=document.getElementById("schoolstate");
	url=url+"&state="+school.options[school.selectedIndex].value;
	}
 var thediv=document.getElementById(divname);
 xmlHttp.onreadystatechange=function () {
 	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
		{  
 		thediv.innerHTML=xmlHttp.responseText;
 		}
 	}
 xmlHttp.open("GET",url,true);
 xmlHttp.send(null);
  }


function GetXmlHttpObject()
 { 
 var objXMLHttp=null
 if (window.XMLHttpRequest)
  {
  objXMLHttp=new XMLHttpRequest()
  }
 else if (window.ActiveXObject)
  {
  objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
  }
 return objXMLHttp
 }

function new_school()
{
 var thediv=document.getElementById("school_div");
 thediv.innerHTML="<input type='hidden' name='newschool'><input type='text' name='school' onchange=document.getElementById('myval').value=this.value ><input type='hidden' name='txtbxschool' id='myval'><br><font size=1>Please enter your school name.</font>";
new_teacher();
}

function new_teacher()
{
 var thediv=document.getElementById("teacher_div");
 thediv.innerHTML="<input type=hidden name=newteacher><input type=text name=teacher onchange=document.getElementById('myval2').value=this.value ><input type='hidden' name='txtbxteacher' id='myval2'><br><font size=1>Please enter your teacher's name.</font>";
}

function sethtml(div,content)
{ 
    var search = content;
    var script;
    
    document.getElementById(div).innerHTML=content;
    while( script = search.match(/(<script[^>]+javascript[^>]+>\s*(<!--)?)/i))
    {
      search = search.substr(search.indexOf(RegExp.$1) + RegExp.$1.length);

      if (!(endscript = search.match(/((-->)?\s*<\/script>)/))) break;

      block = search.substr(0, search.indexOf(RegExp.$1));
      search = search.substring(block.length + RegExp.$1.length);

      var oScript = document.createElement('script');

      oScript.text = block;
      document.getElementsByTagName("head").item(0).appendChild(oScript);
    }

}