function getContent(sID) {
if(sID=='1' || sID=='2' || sID=='3' || sID=='4' || sID=='5' || sID=='6' || sID=='7' || sID=='8' || sID=='9' || sID=='10' || sID=='11' || sID=='12' || sID=='13')
return getContent1(sID);
} 

function GEId(H){return document.getElementById(H);}

var xmlHttp1;
var sCatId1;
var sPreCatId1;
var aFlash = new Array("", "", "", "", "", "", "", "", "", "", "", "", "", "");

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

function showContent1() {
	if (xmlHttp1.readyState==4 || xmlHttp1.readyState=="complete") {
		i = sCatId1.substr(4);
		aFlash[i] = GEId("iHContent1").innerHTML=xmlHttp1.responseText;
	}
} 


function getContent1(sID) {
	sCatId1 = "iCtd" + sID;
	
		if(aFlash[sID] != "") {
		
		GEId("iHContent1").innerHTML = aFlash[sID];
		sPreCatId1 = sCatId1;
		return;
	}
	
	GEId("iHContent1").innerHTML='<div align="center" style="height:50px; padding-top:25px;"><img border="0" src="images/animated_loading1.gif" width="100" height="100" align="absmiddle" /> </div>';
	xmlHttp1=GetXmlHttpObject();
	
	sPreCatId1 = sCatId1;
	if (xmlHttp1==null) {
		alert ("Browser does not support HTTP Request");
		return;
	}
	var url="";
	if(sID==1)
	url="first.html";
	else
	if(sID==2)
	url="second.html";
	else	
	if(sID==3)
	url="third.html";
	else	
	if(sID==4)
	url="fourth.html";
	else	
	if(sID==5)
	url="main.html";
	else	
	if(sID==6)
	url="whoare.html";
	else	
	if(sID==7)
	url="contac.html";
	else	
	if(sID==8)
	url="signal.htm";
	else	
	if(sID==9)
	url="signallab.htm";
	else	
	if(sID==10)
	url="Downloads1.htm";
	else	
	if(sID==11)
	url="books.htm";
	else	
	if(sID==12)
	url="forums.htm";
	else	
	if(sID==13)
	url="program.htm";

			
	
	xmlHttp1.onreadystatechange=showContent1;
	xmlHttp1.open("GET",url,true);
	xmlHttp1.send(null);
	
	for (i=1;i<4;i++)
{
if (i!=sID)
{document.getElementById('box'+i).style.display="none";}
}


}

function toggleState(id)
{
if(document.getElementById('box'+id).style.display=="block")
{document.getElementById('box'+id).style.display="none";
getContent(id);
}
else
{document.getElementById('box'+id).style.display="block";
getContent(id)}

for (i=1;i<4;i++)
{
if (i!=id)
{document.getElementById('box'+i).style.display="none";}
}
}