function proxima() {
	if (numberProx == limite - 1) { 
		//numberProx = 0
	} else {
		numberProx++;
		numberAnt = numberProx;
		//document.images["imgID"].src = pasta + nome[numberProx];
		linkImg = "<a href='javascript: abrirImg(\"" + nome_big[numberProx] + "\")';><img src='portfolio/" + nome[numberProx] + "' width='451' height='375' border='0'></a>";
		
                if(document.all){
                		document.all.desc.innerHTML = desc[numberProx];
                		document.all.imgID.innerHTML = linkImg;
                }else if(document.layers){
                        document.layers["desc"].document.open();
                        document.layers["desc"].document.write(desc[numberProx]);
                        document.layers["desc"].document.close();
                        document.layers["imgID"].document.open();
                        document.layers["imgID"].document.write(linkImg);
                        document.layers["imgID"].document.close();
                }else{
                        document.getElementById("desc").innerHTML = desc[numberProx];
                        document.getElementById("imgID").innerHTML = linkImg;
                }

	}
}

function anterior() {
	if (numberAnt == 0) { 
		//numberAnt = limite - 1
	} else {
		numberAnt--;
		numberProx = numberAnt;
		//document.images["imgID"].src = pasta + nome[numberAnt];
		linkImg = "<a href='javascript: abrirImg(\"" + nome_big[numberAnt] + "\")';><img src='portfolio/" + nome[numberAnt] + "' width='451' height='375' border='0'></a>";

                if(document.all){
                		document.all.desc.innerHTML = desc[numberAnt];
                		document.all.imgID.innerHTML = linkImg;
                }else if(document.layers){
                        document.layers["desc"].document.open();
                        document.layers["desc"].document.write(desc[numberAnt]);
                        document.layers["desc"].document.close();
                        document.layers["imgID"].document.open();
                        document.layers["imgID"].document.write(linkImg);
                        document.layers["imgID"].document.close();
                }else{
                        document.getElementById("desc").innerHTML = desc[numberAnt];
                        document.getElementById("imgID").innerHTML = linkImg;
                }
	}
}


function abrirImg(img_grande){
    varJanela = "img_big.asp?img="+img_grande;
    window.open(varJanela, 'jan', 'toolbar = no, location = no, menubar = no, status = no, directories = no, resizable = yes, scrollbars = yes, width = 640, height = 480');
}