// Shared routines

function clickButton(e, buttonid) {
	var evt = e ? e : window.event;
	var bt = document.getElementById(buttonid);
	if (bt) {
		if (evt.keyCode == 13) {
			bt.click();
			return false;
		}
	}
}  

function openPopup(url,windowName,features) {
	window.open(url,windowName,features);
}

function preloadImage(Url) {
	var i = new Image();
	i.src = Url;
}

function showOrHideElement(element,show) {
	element.style.display = show ? "block" : "none";
}

/* unused
function getFirstAncestorOfClass (sourceElement, className) {
	// recursively search for ancestor of sourceElement that matches className
	var elementBeingTested = sourceElement.parentNode;
	if (elementBeingTested.className == className) return elementBeingTested;
	if (!elementBeingTested.className) return null;	// if run out of elements (like at document) stop
	return getFirstAncestorOfClass(elementBeingTested, className);
}
*/

function getFirstDescendentOrSelfOfClass (sourceElement, className) {
	// recursively search for descendent of sourceElement that matches className
	// test self
	if (sourceElement.className == className) return sourceElement;
	// test children
	var child = sourceElement.firstChild;
	if (child) {
		while (child) {
			var elementBeingTested = getFirstDescendentOrSelfOfClass (child, className);
			if (elementBeingTested) return elementBeingTested;
			child = child.nextSibling;
		}
	}
	return null;
}

function getElement(frameObject,elementId) {
	if (document.getElementById) return frameObject.document.getElementById(elementId);
	if (document.all) return frameObject.document.all[elementId];
	if (document.layers) return frameObject.document.layers[elementId];
	return null;
}

function getElementsStyleObject(frameObject,elementId) {
	if (document.getElementById) return frameObject.document.getElementById(elementId).style;
	if (document.all) return frameObject.document.all[elementId].style;
	if (document.layers) return frameObject.document.layers[elementId];
	return null;
}

function getWindowHeight(frameObject) {
	if (document.all) return frameObject.document.body.clientHeight; // IE on Mac and Windows
	if (document.layers) return frameObject.document.clientHeight;
}

function getWindowWidth(frameObject) {
	if (document.all) return frameObject.document.body.clientWidth; // IE on Mac and Windows
	if (document.layers) return frameObject.document.clientWidth;
}
	
function trace (anObject) {
	alert(listObject(anObject));
}

function listObject(theObject) {
	var m = '';
	for (prop in theObject) {
		m+= prop + ":" + theObject[prop] + "\n";
		//* if theObject[prop] == 
	}
	return(m);
}

function wasLeftButton(e) {
	// takes event object (e) and decides if left button was pressed (as opposed to middle wheel button)
	var buttonPressed = /* (navigator.appName=="Netscape") ?  e.which : */ e.button;
	if (buttonPressed == 1 | buttonPressed == 0 ) return true;
	return false;
}

function appendToCookieString ( cookieString, property, value ) {
	if (cookieString!="") cookieString += "&";
	cookieString += property + ":" + escape(value);
}

function getValueFromCookieString ( cookieString, property) {
	// extract value of given property from encoding like this: "property1:value1&property2:value2"
	var pos = cookieString.indexOf(property); // at start of property label
	if (pos==-1) return null;
	pos += property.length + 1; // at start of value
	var start = pos;
	pos = cookieString.indexOf("&",pos+1);
	// if "&" not found, must be last property:value pair -- end of value is end of cookieString
	// else end of value is just before "&"
	var end = (pos==-1) ? cookieString.length : pos;
	var value = cookieString.substring(start,end);
	return unescape(value);
}
	

// SystemInfo Class
// class to handle system check (browser, etc.)
// Thanks to http://www.xs4all.nl/~ppk/js/detect.html for this code
// TODO: Rewrite?
/* 
function SystemInfo() {
	this.detect = navigator.userAgent.toLowerCase();
	this.OS = null;
	this.browser = null;
	this.version = null;
	//this.subVersion = null;
	this.total = null;
	this.thestring = null;
	this.place = null;

	if (this.checkIt('konqueror')) {
		this.browser = "Konqueror";
		this.OS = "Linux";
	}
	else if (this.checkIt('safari')) {
		this.browser = "Safari"
		//this.subVersion = this.detect.substring(8,12);
	}
	else if (this.checkIt('omniweb')) this.browser = "OmniWeb"
	else if (this.checkIt('opera')) this.browser = "Opera"
	else if (this.checkIt('webtv')) this.browser = "WebTV";
	else if (this.checkIt('icab')) this.browser = "iCab"
	else if (this.checkIt('msie')) this.browser = "Internet Explorer"
	else if (!this.checkIt('compatible')) {
		this.browser = "Netscape Navigator"
		this.version = this.detect.charAt(8);
	}
	else this.browser = "An unknown browser";

	if (!this.version) this.version = this.detect.charAt(this.place + this.thestring.length);
	
	if (!this.OS) {
		if (this.checkIt('linux')) this.OS = "Linux";
		else if (this.checkIt('x11')) this.OS = "Unix";
		else if (this.checkIt('mac')) this.OS = "Mac"
		else if (this.checkIt('win')) this.OS = "Windows"
		else this.OS = "an unknown operating system";
	}
}

SystemInfo.prototype.checkIt = function(string) {
	this.place = this.detect.indexOf(string) + 1;
	this.thestring = string;
	return this.place; // HACK: Weird
}

*/

// Saving state using cookies

/*
expires
domain

document.cookie = "version=" + escape(document.lastModified) + "; expires=" + 
// cookie values may not include semicolons, commas, or whitespace


*/

function getCodesClick(entityName, attributeName, targetElementId) {
    org.sifinfo.nces.EntityCodeSetService.getCodes(entityName, attributeName, getCodesComplete, getCodesError, targetElementId);
}
function getDataSetAttributeCodesClick(attributeName, targetElementId) {
    org.sifinfo.nces.EntityCodeSetService.getDataSetAttributeCodes(attributeName, getCodesComplete, getCodesError, targetElementId);
}
function getCodesComplete( result, targetElementId) {
    //var elem = $get(targetElementId);
    var elem = targetElementId;
    var resultHtml = "";
    if (result instanceof Array) {
        var first = true;

        for (i in result) {
            if (!first) {
                //resultHtml += "<br/> ";
            } else {
                first = false;
            }
            if (result[i].description != null) {
                resultHtml += "<li><strong>"+result[i].codeText + "</strong> - " + result[i].description+"</li>";
                ///resultHtml += result[i].codeText + " - " + result[i].description;
            } else {
                resultHtml += "<li><strong>"+result[i].codeText+"</strong></li>";
            }
        }
    }
    elem.innerHTML = resultHtml;
}
function getCodesError(result) {
    alert(result);
}
function adjustAttributes() {
    var radios = document.getElementsByName("returnType");
    //alert(radios);
    for (var i = 0; i < radios.length; i++) {
        //alert(radios.item(i).value);
        if(radios[i].value=="attributes"){
            var attributes = document.aspnetForm.target;
            if(radios[i].checked == true){
                for(var j=0;j<attributes.length;j++){
                    if(attributes[j].value.indexOf("attribute") == -1){
                        attributes[j].checked = false;
                        attributes[j].disabled = true;
                    }
                }
            }else{
                for(var j=0;j<attributes.length;j++){
                    if(attributes[j].value.indexOf("attribute") == -1){
                        attributes[j].disabled = false;
                    }
                }

            }
            
        }
    }
}