// ============
// DW FUNCTIONS
// ============

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_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_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];}
}

// =================
// GALLERY FUNCTIONS
// =================


function showGallery(e,v) { // v1.0
    element = document.getElementById(e).style;
    if (v == 1) {
        element.display='block';
    } else {
        element.display='none';
    }
}


// ==============
// FORM SECURITY
// ==============

function checkWidth(){
    var x=document.forms["colour"].width.value
    var anum=/(^\d+$)|(^\d+\.\d+$)/
    if (anum.test(x))
	if (x>0) {
    	    testresult=true
	} else {
	    document.forms["colour"].drop.value = "";
	    alert ("Please enter a valid drop !");
	    testresult=false
	}
    else{
	document.forms["colour"].width.value= "";
	alert ("Please enter a valid width !");
	testresult=false
    }
    return (testresult)
}


function checkDrop(){
    var x=document.forms["colour"].drop.value
    var anum=/(^\d+$)|(^\d+\.\d+$)/
    if (anum.test(x))
	if (x>0) {
    	    testresult=true
	} else {
	    document.forms["colour"].drop.value = "";
	    alert ("Please enter a valid drop !");
	    testresult=false
	}

    else{
	document.forms["colour"].drop.value = "";
	alert ("Please enter a valid drop !");
	testresult=false
    }
return (testresult)
}


function conf(url,txt) {
    var answer = confirm("Are you sure you want to "+txt)
    if (answer){
        window.location = url;
    }
}


function popUp(URL,w,h) {
    day = new Date();
    id = day.getTime();
    eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+w+',height='+h+',left = 490,top = 362');");
}


function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


// =================
// COOKIES FUNCTIONS
// =================

function createCookie(name,value,days)
{
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i<ca.length;i++){
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function cartAction(act) {
	if (act == "update") {
	    document.forms["order"].action = "specials,update,cart.html";
	    document.forms["order"].submit();
	}
}

function submitColourOptions() {
	var width = document.forms["colour"].width.value;
	var drop = document.forms["colour"].drop.value;
	if (width != '' && drop != '') {
    	document.forms["colour"].submit();
	} else {
		if (width == '') {
			alert('Please enter a valid width!');
			document.forms["colour"].width.focus();
			return(false);
		}
		if (drop == '') {
			alert('Please enter a valid drop!');
			document.forms["colour"].drop.focus();
			return(false);
		}
		return(false);
	}

}

function popupPic(sPicURL, title,w,h) {
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+'resizable=0'
    window.open("index.php?type=help&section="+sPicURL+"&"+title+"", "", winprops)
}


function showVelux() {
	var val = document.forms["veluxNavSys"].secondary.value;
	var prim = document.forms["veluxNavSys"].primary.value;
	if (val != "") {
		var tmp = val.split(",");
		document.location = "/velux,"+tmp[0]+","+tmp[1]+",0,"+prim+"-"+tmp[2]+".html";
		//document.forms["veluxNavSys"].submit();
	}
}


function checkOrder() {
    var res =1;
    if (document.order.name.value == "") {
		res = 0;
    }
    if (document.order.email.value == "") {
		res = 0;
    }
    if (res == 1) {
		document.order.submit();
    } else {
		alert("Please enter your name and email !");
    }

}


function checkContact() {
	var res=1;
	if (document.contact.email.value == "") {
		res = 0;
	}
	if (res == 1) {
		document.contact.submit();
	} else {
		alert("Please enter your email address so we can so we can reply to your enquiry!");
	}
}


function showDeliveryData(v) { // v1.0
    element = document.getElementById("deliveryAddr").style;
    if (v == 1) {
        element.display='block';
    } else {
        element.display='none';
    }

}

// =======================

function getNextBlindsImage(blindsName,currentID) {
	$('imageContainer').innerHTML = ' ';
	var url = 'index.php';
	var pars = 'a=nextBlindsImage&blindsName=' + blindsName + '&id=' + currentID;
	var myAjax = new Ajax.Updater(
				'imageContainer',
				url, 
				{
					method: 'get', 
					parameters: pars
				});	
}