// JavaScript Document

image1 		= new Image();
image1.src 	= "images/spacer.gif";

image2 		= new Image();
image2.src 	= "images/center_left_top.gif";

image3 		= new Image();
image3.src 	= "images/center_hor_top.gif";

image4 		= new Image();
image4.src 	= "images/center_right_top.gif";

image5 		= new Image();
image5.src 	= "images/center_ver_left.gif";

image6 		= new Image();
image6.src 	= "images/center_ver_right.gif";

image7 		= new Image();
image7.src 	= "images/center_left_bottom.gif";

image8 		= new Image();
image8.src 	= "images/center_hor_bottom.gif";

image9 		= new Image();
image9.src 	= "images/center_right_bottom.gif";


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



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



function change_color(el, bg1, bg2){
	for (i = 0; i < el.parentNode.childNodes.length; i++)
		if (el.parentNode.childNodes[i].tagName)
		el.parentNode.childNodes[i].style.backgroundImage=bg2
		el.style.backgroundImage=bg1
}



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



function print_page(listing) {
	var leftPos = (screen.availWidth-750) / 2;
	var topPos = (screen.availHeight-550) / 2;
	Press1Win = window.open('site_detail_print.php?listing=' + listing,'','width=750,height=550,scrollbars=yes,resizable=yes,titlebar=0,top=' + topPos + ',left=' + leftPos);
}

function print_page2(listing) {
	var leftPos = (screen.availWidth-850) / 2;
	var topPos = (screen.availHeight-600) / 2;
	Press1Win = window.open('site_detail_print_ad.php?listing=' + listing,'','width=850,height=600,scrollbars=yes,resizable=yes,titlebar=0,top=' + topPos + ',left=' + leftPos);
}

function slideshow(listing) {
	var leftPos = (screen.availWidth-700) / 2;
	var topPos = (screen.availHeight-600) / 2;
	Press1Win = window.open('site_detail_slideshow.php?listing=' + listing,'','width=700,height=600,scrollbars=yes,resizable=no,titlebar=0,top=' + topPos + ',left=' + leftPos);
}



function open_subscription(listing) {
	var leftPos = (screen.availWidth-350) / 2;
	var topPos = (screen.availHeight-300) / 2;
	Press1Win = window.open('site_detail_calculator.php?listing=' + listing,'','width=350,height=300,scrollbars=no,resizable=no,titlebar=0,top=' + topPos + ',left=' + leftPos);
}



function open_calculator(listing) {
	var leftPos = (screen.availWidth-350) / 2;
	var topPos = (screen.availHeight-300) / 2;
	Press1Win = window.open('site_detail_calculator.php?listing=' + listing,'','width=350,height=300,scrollbars=no,resizable=no,titlebar=0,top=' + topPos + ',left=' + leftPos);
}



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);
	
}


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//Drop Down/ Overlapping Content: http://www.dynamicdrive.com
//**Updated: Dec 19th, 07': Added ability to dynamically populate a Drop Down content using an external file (Ajax feature)
//**Updated: Feb 29th, 08':
				//1) Added ability to reveal drop down content via "click" of anchor link (instead of default "mouseover")
				//2) Added ability to disable drop down content from auto hiding when mouse rolls out of it
				//3) Added hidediv(id) public function to directly hide drop down div dynamically

//**Updated: Sept 11th, 08': Fixed bug whereby drop down content isn't revealed onClick of anchor in Safari/ Google Chrome

var dropdowncontent={
	disableanchorlink: true, //when user clicks on anchor link, should link itself be disabled (always true if "revealbehavior" above set to "click")
 hidedivmouseout: [true, 200], //Set hiding behavior within Drop Down DIV itself: [hide_div_onmouseover?, miliseconds_before_hiding]
	ajaxloadingmsg: "Loading content. Please wait...", //HTML to show while ajax page is being feched, if applicable
	ajaxbustcache: true, //Bust cache when fetching Ajax pages?

	getposOffset:function(what, offsettype){
		return (what.offsetParent)? what[offsettype]+this.getposOffset(what.offsetParent, offsettype) : what[offsettype]
	},

	isContained:function(m, e){
		var e=window.event || e
		var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)
		while (c && c!=m)try {c=c.parentNode} catch(e){c=m}
		if (c==m)
			return true
		else
			return false
	},

	show:function(anchorobj, subobj, e){
		if (!this.isContained(anchorobj, e) || (e && e.type=="click")){
			var e=window.event || e
			if (e.type=="click" && subobj.style.visibility=="visible"){
				subobj.style.visibility="hidden"
				return
			}
			var horizontaloffset=(subobj.dropposition[0]=="left")? -(subobj.offsetWidth-anchorobj.offsetWidth) : 0 //calculate user added horizontal offset
			var verticaloffset=(subobj.dropposition[1]=="top")? -subobj.offsetHeight : anchorobj.offsetHeight //calculate user added vertical offset
			subobj.style.left=this.getposOffset(anchorobj, "offsetLeft") + horizontaloffset + "px"
			subobj.style.top=this.getposOffset(anchorobj, "offsetTop")+verticaloffset+"px"
			subobj.style.clip=(subobj.dropposition[1]=="top")? "rect(auto auto auto 0)" : "rect(0 auto 0 0)" //hide drop down box initially via clipping
			subobj.style.visibility="visible"
			subobj.startTime=new Date().getTime()
			subobj.contentheight=parseInt(subobj.offsetHeight)
			if (typeof window["hidetimer_"+subobj.id]!="undefined") //clear timer that hides drop down box?
				clearTimeout(window["hidetimer_"+subobj.id])
			this.slideengine(subobj, (subobj.dropposition[1]=="top")? "up" : "down")
		}
	},

	curveincrement:function(percent){
		return (1-Math.cos(percent*Math.PI)) / 2 //return cos curve based value from a percentage input
	},

	slideengine:function(obj, direction){
		var elapsed=new Date().getTime()-obj.startTime //get time animation has run
		if (elapsed<obj.glidetime){ //if time run is less than specified length
			var distancepercent=(direction=="down")? this.curveincrement(elapsed/obj.glidetime) : 1-this.curveincrement(elapsed/obj.glidetime)
			var currentclip=(distancepercent*obj.contentheight)+"px"
			obj.style.clip=(direction=="down")? "rect(0 auto "+currentclip+" 0)" : "rect("+currentclip+" auto auto 0)"
			window["glidetimer_"+obj.id]=setTimeout(function(){dropdowncontent.slideengine(obj, direction)}, 10)
		}
		else{ //if animation finished
			obj.style.clip="rect(0 auto auto 0)"
		}
	},

	hide:function(activeobj, subobj, e){
		if (!dropdowncontent.isContained(activeobj, e)){
			window["hidetimer_"+subobj.id]=setTimeout(function(){
				subobj.style.visibility="hidden"
				subobj.style.left=subobj.style.top=0
				clearTimeout(window["glidetimer_"+subobj.id])
			}, dropdowncontent.hidedivmouseout[1])
		}
	},

	hidediv:function(subobjid){
		document.getElementById(subobjid).style.visibility="hidden"
	},

	ajaxconnect:function(pageurl, divId){
		var page_request = false
		var bustcacheparameter=""
		if (window.XMLHttpRequest) // if Mozilla, IE7, Safari etc
			page_request = new XMLHttpRequest()
		else if (window.ActiveXObject){ // if IE6 or below
			try {
			page_request = new ActiveXObject("Msxml2.XMLHTTP")
			} 
			catch (e){
				try{
				page_request = new ActiveXObject("Microsoft.XMLHTTP")
				}
				catch (e){}
			}
		}
		else
			return false
		document.getElementById(divId).innerHTML=this.ajaxloadingmsg //Display "fetching page message"
		page_request.onreadystatechange=function(){dropdowncontent.loadpage(page_request, divId)}
		if (this.ajaxbustcache) //if bust caching of external page
			bustcacheparameter=(pageurl.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', pageurl+bustcacheparameter, true)
		page_request.send(null)
	},

	loadpage:function(page_request, divId){
		if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
			document.getElementById(divId).innerHTML=page_request.responseText
		}
	},

 init:function(anchorid, pos, glidetime, revealbehavior){
		var anchorobj=document.getElementById(anchorid)
		var subobj=document.getElementById(anchorobj.getAttribute("rel"))
		var subobjsource=anchorobj.getAttribute("rev")
		if (subobjsource!=null && subobjsource!="")
			this.ajaxconnect(subobjsource, anchorobj.getAttribute("rel"))
		subobj.dropposition=pos.split("-")
		subobj.glidetime=glidetime || 1000
		subobj.style.left=subobj.style.top=0
		if (typeof revealbehavior=="undefined" || revealbehavior=="mouseover"){
			anchorobj.onmouseover=function(e){dropdowncontent.show(this, subobj, e)}
			anchorobj.onmouseout=function(e){dropdowncontent.hide(subobj, subobj, e)}
			if (this.disableanchorlink) anchorobj.onclick=function(){return false}
		}
		else
			anchorobj.onclick=function(e){dropdowncontent.show(this, subobj, e); return false}
		if (this.hidedivmouseout[0]==true) //hide drop down DIV when mouse rolls out of it?
			subobj.onmouseout=function(e){dropdowncontent.hide(this, subobj, e)}
	}
}

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