/*------------------------------------------------------
Title:		Common Configurator Utilities
Updated:	August 18 2008
------------------------------------------------------ */





// add load event function
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}



/*
    returns array with all elements with specified class name
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/ 
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};




// returns element by id
function get(id) {
	return document.getElementById(id);
}




// returns form element's value
function value(id) {
	return document.getElementById(id).value;
}




// simple show
function show(id,x,y) {
	if (!document.getElementById) return;
		
	var element = document.getElementById(id);
	
	if(navigator.appName.indexOf("Microsoft") > -1) {
		element.style.display = 'block';
	}

	else {
		if(element.nodeName == 'TABLE') {
			element.style.display = 'table';
		}
		
		else if(element.nodeName == 'TR') {
			element.style.display = 'table-row';
		}

		else if(element.nodeName == 'TBODY') {
			element.style.display = 'table-row-group';
		}
		
		else {
			element.style.display = 'block';
		}
	}
}




// simple hide
function hide(id) {
	if (!document.getElementById) return;
		
	var element = document.getElementById(id);
	
	element.style.display = 'none';
}




// simple toggle
function toggleSection(strID) {
	var oDiv=document.getElementById(strID);
  
	if(oDiv.style.display=="")
		oDiv.style.display="none";
	else
		oDiv.style.display="";
}