// Javascript Functions

var xmlHttp;


function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}

// AJAX function for xmlHttp request for change state
function add_drop_menu_contents_change_by_id() 
{ 
var v;
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
	if (v=0)
	{
		document.getElementById("menu_drop_up_div").visible=false;
	 v=1;
	}
	document.getElementById("menu_drop_up_div").innerHTML=xmlHttp.responseText;
 }
 	else  {
	
		if (v=0)
		{
			document.getElementById("menu_drop_up_div").visible=true; v=1;
		}
		}
}

function view_drop_menu_contents(parent_content,obj1)
{
	if(parent_content=="about_us")
	{
	var obj=document.getElementById(obj1);
	var curleft_corp=0;
	var curtop_corp=0;
		  if (obj.offsetParent) {
				do {
					  curleft_corp += obj.offsetLeft;
					  curtop_corp += obj.offsetTop;
				} while (obj = obj.offsetParent);
		  }	
	curtop_corp=curtop_corp+24;
	var curtop_corp_st=curtop_corp+'px';
	var curleft_corp_st=''+curleft_corp+'px';
	
	
	document.getElementById("menu_drop_up_div").style.top=curtop_corp_st;
	document.getElementById("menu_drop_up_div").style.left=curleft_corp_st;
	
	document.getElementById("menu_drop_up_div").innerHTML='<div align="left" class="gen_div_fl_100 drop_menu_bg" style="padding-top:4px;"><table cellpadding="3" cellspacing="0"><tr><td style="width:2%; padding-left:10px;"><img src="all_icons/sun.png"></td><td style="width:98%;"><a title="Message For Student in English" href="message_for_student.php" class="d_menu_link">Message For Student in English</a></td></tr><tr><td style="width:2%; padding-left:10px;"><img src="all_icons/sun.png"></td><td style="width:98%;"><a title="Message For Student in Bangla" href="message_for_student_bang.php" class="d_menu_link">Message For Student in Bangla</a></td></tr></table></div>';
	
	document.getElementById("menu_drop_up_div").style.display ="block";
	}
	else
	{
	document.getElementById("menu_drop_up_div").innerHTML='&nbsp;';		
	document.getElementById("menu_drop_up_div").style.display ="none";
	}
}


function changeOpac(opacity, id)
{
var object = document.getElementById(id).style;
object.opacity = (opacity / 100);
object.MozOpacity = (opacity / 100);
object.KhtmlOpacity = (opacity / 100);
object.filter = "alpha(opacity=" + opacity + ")";
}

function close_div(obj)
{
	document.getElementById(obj).style.display ="none";
}