var DHTML = (document.getElementById || document.all || document.layers);
var NS4 = (navigator.appName.indexOf("Netscape")>=0 && !document.getElementById)? true : false;
var IE4 = (document.all && !document.getElementById)? true : false;
var IE5 = (document.getElementById && document.all)? true : false;
var NS6 = (document.getElementById && navigator.appName.indexOf("Netscape")>=0 )? true: false;
var W3C = (document.getElementById)? true : false;

function changeMainImage(newsrc) {
	//updateLayer('id_mainimage', "<img src=\""+newsrc+"\"/> ");
	//alert(newsrc);
	//document.forms['viewproperty'].mainimage.src = newsrc;
	//document.forms[formname].imageid.src= newsrc;
	//document.forms[formname].imageid.src= newsrc;
	document['mainimage_pic'].src = newsrc;
}

function getObj(name) { 
  
  var done = false;

  if (document.getElementById) {
	done = true;
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style; 
  } else if (document.all) { 
	done = true;
	this.obj = document.all[name];
	this.style = document.all[name].style;
  } else if (document.layers) {
	done = true;
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  } else 
	return false;
 
 this.done = done;
 return this;
}


var lastDecFadeLayer = "";
var lastFadeLayer = "";

function incropacity(){

navtxt = new getObj(lastFadeLayer);

if(ieop<= gOpacity ){
ieop+=52;
if(IE4 || IE5)navtxt.style.filter="alpha(opacity="+ieop+")";
if(NS6)navtxt.style.MozOpacity=ieop/100;
op_id=setTimeout('incropacity()', 80);
}}




function dec_opacity(){

navtxt = new getObj(lastDecFadeLayer);
if(!navtxt) return false;
if(deop>=0){
deop-=7;
if(IE4 || IE5)navtxt.style.filter="alpha(opacity="+deop+")";
if(NS6)navtxt.style.MozOpacity=deop/100;
de_id=setTimeout('dec_opacity()', 220);
} 



}

function collapseLayer(layername, h) {
	
	var h = new getObj(layername);
	h.style.height = "10px"
}

function updateLayer(layername, textTag) {
 //alert(layername);
var h = new getObj(layername);
h.style.visibility =  'visible';

if (document.getElementById) {
      // Standards Compliant code fork...
	
	object = document.getElementById(layername);
	object.innerHTML = textTag;
}
else if (document.all)
	document.all.imagediv.innerHTML = textTag;
else if (document.layers) {
	obj = document.layers[layername].document.open();
	obj.write(textTag);
	obj.close();
}
}

function showlayer(layerName){

//var x = getObj('placements');

var h = new getObj(layerName);
//h.style.top =  22;
//h.style.left = 260;

h.style.visibility =  'visible';

}

function hidelayer(layerName){
var x = new getObj(layerName);
x.style.visibility =  'hidden';

}

function fadeinLayer(layerName){
 lastFadeLayer = layerName;
 deop = 100;
 dec_opacity();
  
}

function fadeoutLayer(layerName){
 lastDecFadeLayer = layerName;
 deop = 100;
 dec_opacity();
  
}