// JavaScript Document
function expand(name) {
	document.getElementById( name ).style.display = "block";
}



function collapse(name) {
	document.getElementById( name ).style.display = "none";
}



function change_color(box_id, box_bg, box_color, lbl_id, lbl_color) {
	document.getElementById(lbl_id).style.color 			= lbl_color;
	document.getElementById(box_id).style.color 			= box_color;
	document.getElementById(box_id).style.backgroundColor 	= box_bg;
}



function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}



function preview_image(url, text){
	document.photo_img.src 								= url;
	document.getElementById("photo_text").innerHTML 	= text;
}


function imgover(img_name, imgfile){
	document.getElementById(img_name).src = imgfile;
}



function on_off(id_tr, color){
	document.getElementById(id_tr).style.backgroundColor 	= color;		
}



function formatCurrency(num) {

	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";

	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	
	return (num + '.' + cents);
	
}



function format_number(val) {

	val	= val.replace(/,/g , "");
	return parseFloat(val); 

}



function calculate_mortgage(form) {

	var amount 	= format_number(form.loan_price.value);
	var amount2	= format_number(form.loan_price.value);
	var down 	= format_number(form.loan_down.value);
	var rate 	= format_number(form.loan_interest.value) / 100;
	var term 	= format_number(form.loan_years.value) * 12;
	var payment = 0;
	
	amount		= amount - down;
	payment 	= amount * (rate / 12) / (1 - Math.pow ((1 + rate/12), -term));
	payment 	= Math.round (100 * payment) / 100;
	
	form.loan_price.value 	= formatCurrency(amount2);
	form.loan_down.value 	= formatCurrency(down);
	form.loan_monthly.value = formatCurrency(payment);
	
}



function getXMLHTTP() {

	var xmlhttp=false;	
	try{ xmlhttp=new XMLHttpRequest(); }
	catch(e)	{		
		try{ xmlhttp= new ActiveXObject("Microsoft.XMLHTTP"); }
		catch(e){
			try{ xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
			catch(e1){ xmlhttp=false; }
		}
	}
	return xmlhttp;

}


function find_model(strURL, box_id, text) {		
	
	var req  = getXMLHTTP();
	var txt  = "<select name='s_model' 			class='textbox' style='width:310px'><option>" + text + "</option></select>";
	var txt2 = "<select name='s_model' 			class='textbox' style='width:200px'><option>" + text + "</option></select>";
	var txt3 = "<select name='listing_model' 	class='textbox' style='width:150px'><option>" + text + "</option></select>";
	
	if (box_id == "global_s_model"	) { document.getElementById(box_id).innerHTML=txt; 	}
	if (box_id == "adv_s_model"		) { document.getElementById(box_id).innerHTML=txt2; }
	if (box_id == "seller_model"	) { document.getElementById(box_id).innerHTML=txt3; }
	
	
	if (req) {
		
		req.onreadystatechange = function() {
			if (req.readyState == 4) {
				if (req.status == 200) { document.getElementById(box_id).innerHTML=req.responseText; } 
				else { alert("There was a problem while using XMLHTTP:\n" + req.statusText); }
			}				
		}			
		req.open("GET", strURL, true);
		req.send(null);
	}
			
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}