// shopping basket js code file
// Kieran Metcalfe - Dec 2007

// setup an XMLHTTP Object - used for various things
function getHTTP() {
	var xmlhttp=false;
	/*@cc_on @*/
	/*@if (@_jscript_version >= 5)
	// JScript gives us Conditional compilation, we can cope with old IE versions.
	// and security blocked creation of the objects.
 	try {
  	xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 	} catch (e) {
  	try {
   	xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  		} catch (E) {
   			xmlhttp = false;
  		}
 	}
	@end @*/
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (e) {
			xmlhttp=false;
		}
	}
	if (!xmlhttp && window.createRequest) {
		try {
			xmlhttp = window.createRequest();
		} catch (e) {
			xmlhttp=false;
		}
	}
	
	return xmlhttp;
}

	var bskopen = 
	0	;
	
  
	function toggleBasket() {
		obj = document.getElementById("container");
		bask = document.getElementById("basketContainer");
		bLink = document.getElementById("basketOpenLink");
				
		if (obj.className == "container-basketclosed") {
			obj.className = "container-basketopen";	
			bask.className = "basket-open";
			bLink.style.display = "none";
			bskopen = 1;
		}else{
			obj.className = "container-basketclosed";
			bask.className = "basket-closed";
			bLink.style.display = "block";
			bskopen = 0;
		}
		
		// send ajax request
		xmlhttp = getHTTP();
		if (!xmlhttp) {
			alert("Error creating AJAX request");
		} else {
			xmlhttp.open("GET", "/basket/toggleBasket.php?open=" + bskopen,true);
 			xmlhttp.onreadystatechange=function() {
  				if (xmlhttp.readyState==4) {
   					//alert(xmlhttp.responseText)
   					window.status = "Basket Toggled";
  				}
 			}
 			xmlhttp.send(null)
		}
		
	}
	
var gType = ""; 
var gItem = "";
var gInstr = "";
var donePopup = false;	



function doAdd() {
	// send ajax request
	
	if (donePopup) {
		gInstr = processFields();
	} else {
		gInstr = "";
	}
	
	xmlhttp = getHTTP();
	if (!xmlhttp) {
			alert("Error creating AJAX request");
		} else {
			
			xmlhttp.open("POST", "/basket/basketAdd.php", true); 
 			
			xmlhttp.onreadystatechange=function() {
  				if (xmlhttp.readyState==4) {
   					//alert(xmlhttp.responseText)
   					setBasketSummary(xmlhttp.responseText); 
   					if (bskopen == 0) {
   						toggleBasket();
   					}  					
  				}
 			}
 			
 			var content = "type=" + gType + "&itm=" + gItem + gInstr;
 			
 			//Send the proper header information along with the request
			xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			xmlhttp.setRequestHeader("Content-length", content.length);
			xmlhttp.setRequestHeader("Connection", "close");
 			
 			xmlhttp.send(content)
		}	
		
	
}
	
function basketAdd(type, item, dlg) {
	
	gType = type;
	gItem = item;
		pm = document.getElementById("popupMask");
		
		if (pm == null) {
			dlg = false;
		} else {
			dlg = true;
		}
		
	if (dlg) {
		
		donePopup = true;	
		showPopWin('/paypaltest.php', 400, 400, doAdd); 
	
	} else {
		donePopup = false;
	 	doAdd();
	}
	
	
	
}

function basketClear() {
	
	if (confirm("This will remove all items from your basket.\nAre you sure?")) {
		
		xmlhttp = getHTTP();
		if (!xmlhttp) {
				alert("Error creating AJAX request");
			} else {
				xmlhttp.open("GET", "/basket/basketClear.php", true); 
 				xmlhttp.onreadystatechange=function() {
  					if (xmlhttp.readyState==4) {
   					//alert(xmlhttp.responseText)
   						setBasketSummary(xmlhttp.responseText);
  					}
 				}
 				xmlhttp.send(null)
			}	
		
	}
	
}

function setBasketSummary(val) {
	
	objs = document.getElementsByName("basketSummary");
	
	idx = val.indexOf("<!--END SUMMARY-->");
	summary = val.substring(0, idx);
			
	for (i = 0;i < objs.length;i++) {
		objs[i].innerHTML = summary;
	}
	
	objs = document.getElementsByName("basketDetail");
	for (i = 0;i < objs.length;i++) {
		objs[i].innerHTML = val;
	}
	
	
}

function removeItem(id) {
	
	xmlhttp = getHTTP();
		if (!xmlhttp) {
				alert("Error creating AJAX request");
			} else {
				xmlhttp.open("GET", "/basket/removeItem.php?itm=" + id, true); 
 				xmlhttp.onreadystatechange=function() {
  					if (xmlhttp.readyState==4) {
   					//alert(xmlhttp.responseText)
   						setBasketSummary(xmlhttp.responseText);
  					}
 				}
 				xmlhttp.send(null)
			}	

}

var instrFlds = new Array();
var instrLbls = new Array();

function registerField(name, label) {
	instrFlds.push(name);
	instrLbls.push(label);
}

function processFields() {
	
	var outStr = "";
	
	for (i = 0; i < instrFlds.length;i++) {
		aryFlds = document.getElementsByName(instrFlds[i]);
		
		//alert (instrFlds[i] + " : " + aryFlds[0].type);
		
		
		
		valStr = "";
		
		switch (aryFlds[0].type) {
			case "radio":
				
				for(j = 0;j < aryFlds.length;j++) {
					if (aryFlds[j].checked) {
						valStr += aryFlds[j].value;
					}
				}
			
				break;
			case "select-one":
				
				valStr += aryFlds[0].options[aryFlds[0].selectedIndex].text;
			
				break;
			case "text":
				
				valStr += aryFlds[0].value;
			
				break;
			case "textarea":
			
				valStr += aryFlds[0].value;
			
				break;
			default:
				alert("unknown type: " + aryFlds[0].type + " (" + instrLbls[i] + ")");
		}
		
		/*if (valStr != "") {
			if (i > 0) {
			outStr += "\n";
		}*/
			
		
		//outStr += instrLbls[i] + ": " + valStr;
		
		outStr += "&" + instrFlds[i] + "=" + valStr + "&" + instrFlds[i] + "-lbl=" + instrLbls[i];
		
		//}
		
	}
	
	return outStr;
	
}