x=0; // img circle
y=0; // stop 
bannerx=0;
bannery=0;
var imgs=new Array(); 
var imghref=new Array(); 
var rimgs=new Array(); 
var rimghref=new Array();  
imgurl="";
largeimg="";
currentnum = 0;
currentnums = 0;
leftimg = 0; //solution list img
rightimg = 0;
function setimgurl(url){
	imgurl=url;
}

function imgchange(i){
	i=i+1;
	for(a=1;a<=3;a++)
		document.getElementById("number"+a).className="";
	document.getElementById("imgbox").src=imgurl+"-"+i+".jpg";
	document.getElementById("number"+i).className="current";
	largeimg = "<img src='"+imgurl+"-larger-"+i+".jpg' width='396' height='450' />";
}
function imgauto(){
	if(y==0){
		imgchange(x);
		x=(x+1)%3;
	}
}

function imgchange2(i){
	for(a=1;a<=2;a++){
		document.getElementById("numbers"+a).className="";
		document.getElementById("projecttxt"+a).style.display="none";
	}
	document.getElementById("imgboxs").src=imgurl+"-project-"+i+".jpg";
	document.getElementById("numbers"+i).className="current";
	document.getElementById("projecttxt"+i).style.display="";
}
function hoverchange(i){
	if(document.getElementById("numbers"+i).className=="current"){
		document.getElementById("numbers"+i).className="current";
	}else{
		document.getElementById("numbers"+i).className="hover";
	}	
}
function outchange(i){
	if(document.getElementById("numbers"+i).className=="current"){
		document.getElementById("numbers"+i).className="current";
	}else{
		document.getElementById("numbers"+i).className="";
	}	
}
function numadd(tag){
	if(tag=="em"){
		for(num=0;num<=5;num++){
			document.getElementById(tag+""+num).className ="";
		}
		currentnum = (currentnum + 1) % 8; 
		document.getElementById(tag+""+ currentnum).className ="current";
	}else{
		for(num=0;num<=2;num++){
			document.getElementById(tag+""+num).className ="";
		}
		currentnums = (currentnums + 1) % 4; 
		document.getElementById(tag+""+ currentnums).className ="current";
	}
}
function numsub(tag){
	if(tag=="em"){
		for(nums=0;nums<=7;nums++){
			document.getElementById(tag+""+nums).className ="";
		}
		if(currentnum==0) currentnum = 8;
		currentnum = currentnum - 1;
		document.getElementById(tag+""+ currentnum).className ="current";
	}else{
		for(nums=0;nums<=3;nums++){
			document.getElementById(tag+""+nums).className ="";
		}
		if(currentnums==0) currentnums = 4;
		currentnums = currentnums - 1; 
		document.getElementById(tag+""+currentnums).className ="current";
	}
	
}