/**
 * sphere.js 1.1 (29-Sep-2008)
 * (c) by Christian Effenberger 
 * requires "cvi_sphere_lib.js"
 * All Rights Reserved
 * Source: sphere.netzgesta.de
 * Distributed under Netzgestade Software License Agreement
 * http://www.netzgesta.de/cvi/LICENSE.txt
 * License permits free of charge
 * use on non-commercial and 
 * private web sites only 
**/

function cviErrorLog(value) {
	if(window.console) {
		window.console.log(value);
	}else if(window.opera) {
		opera.postError(value);
	}else {
		window.document.title=value;
	}	
}

function getImages(className){
	var children = document.getElementsByTagName('img'); 
	var elements = new Array(); var i = 0;
	var child; var classNames; var j = 0;
	for (i=0;i<children.length;i++) {
		child = children[i];
		classNames = child.className.split(' ');
		for (var j = 0; j < classNames.length; j++) {
			if (classNames[j] == className) {
				elements.push(child);
				break;
			}
		}
	}
	return elements;
}

function getClasses(classes,string){
	var temp = '';
	for (var j=0;j<classes.length;j++) {
		if (classes[j] != string) {
			if (temp) {
				temp += ' '
			}
			temp += classes[j];
		}
	}
	return temp;
}

function getClassValue(classes,string){
	var temp = 0; var pos = string.length;
	for (var j=0;j<classes.length;j++) {
		if (classes[j].indexOf(string) == 0) {
			temp = Math.min(classes[j].substring(pos),100);
			break;
		}
	}
	return Math.max(0,temp);
}

function getClassLimit(classes,string,def,min,max){
	var temp = def; var pos = string.length;
	for (var j=0;j<classes.length;j++) {
		if (classes[j].indexOf(string) == 0) {
			temp = parseInt(classes[j].substring(pos));
			break;
		}
	}
	return Math.min(Math.max(temp,min),max);
}

function getClassColor(classes,string){
	var temp = 0; var str = ''; var pos = string.length;
	for (var j=0;j<classes.length;j++) {
		if (classes[j].indexOf(string) == 0) {
			temp = classes[j].substring(pos);
			str = '#' + temp.toLowerCase();
			break;
		}
	}
	if(str.match(/^#[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]$/i)) {
		return str;
	}else {
		return 0;
	}
}

function addSphere() {
	var cc=document.createElement('canvas');
	if(cc.getContext||(document.all&&document.namespaces&&!window.opera)){ 
		if(typeof cvi_sphere!='undefined') {
			var i,cl='',sz,st,zo,op,sh,sd,c1,c2,img=getImages('sphere');
			for(i=0;i<img.length;i++) {	
				if(img[i].width>=32||img[i].height>=32) {
					sz=0; st=50; zo=100; op=100; sh=100; sd=100; c2=0; c1=0;
					cl=img[i].className.split(' '); 
					sz=getClassValue(cl,"isize");
					zo=getClassLimit(cl,"izoom",100,100,200);
					st=getClassLimit(cl,"ishift",100,0,100);
					op=getClassValue(cl,"ialpha");
					sh=getClassValue(cl,"ishade");
					sd=getClassValue(cl,"ishine");
					c1=getClassColor(cl,"icolor");
					c2=getClassColor(cl,"igradient");
					cvi_sphere.add(img[i],{size:sz,zoom:zo,shift:st,alpha:op,shade:sh,shine:sd,color:c1,color2:c2,show:true});
				}
			}
		}else {cviErrorLog('Error (missing library): "cvi_sphere_lib.js" is required!');}
	}
}

var sphereOnload = window.onload;
window.onload = function () { if(sphereOnload) sphereOnload(); addSphere();}