// JavaScript Document
function preloads(){
var a=preloads.arguments;
displayimg=new Array();
for(i=0; i<a.length; i++){
displayimg[i]=new Image();
displayimg[i].src=a[i];
}

}
//numind is the index number of the preloaded image 

function chcol(numind,titl){
//	alert('good');
     if (document.getElementById("over")){
	document.getElementById("over").style.width="530px";
	document.getElementById("over").style.height="590px";
	 }
	 if (document.getElementById("treecont")){
	document.getElementById("treecont").style.display="block";
	 }
	 if (document.getElementById("itp")&& document.getElementById("itt")){
	document.getElementById("itp").src=displayimg[numind].src;
	document.getElementById("itt").innerHTML=titl;
	 }
}

function chback(){
    
	var l=displayimg.length;
	if (document.getElementById("over") && document.getElementById("treecont")){
	document.getElementById("over").style.width="30px";
	document.getElementById("over").style.height="125px";
	document.getElementById("treecont").style.display="none";
	}
	 if (document.getElementById("treecont")){
    document.getElementById("treecont").style.display="none";
	 }
	 if (document.getElementById("itp")&& document.getElementById("itt")){
	document.getElementById("itp").src=displayimg[l-1].src;
	document.getElementById("itt").innerHTML="&nbsp;";
	 }
}

function chbck(){
//    
//	}if (document.getElementById("over")){
//    alert('good');
	document.getElementById("over").style.width="auto";
	document.getElementById("over").style.height="auto";
	document.getElementById("treecont").style.display="none";
	
}