function changeBackground(myBackGrounds, numLimite){  
    var rand_no = Math.random();
    rand_no = rand_no * numLimite;
    rand_no = Math.ceil(rand_no);
    if (document.body){
        document.body.background = myBackGrounds[rand_no-1];
        
    }
}

function tipText(Designacao, Preco, Marca, Observacoes, Tamanho){
    str = "<span class=txtGreen>Designacao: </span><span class=txtpreto>" + Designacao + "</span>";

    if (Preco != "") {
        str = str + "<br><span class=txtGreen>Preco: </span><span class=txtpreto>" + Preco + "</span>";
    }
    if (Marca != "") {
        str = str + "<br><span class=txtGreen>Marca: </span><span class=txtpreto>" + Marca + "</span>";
    }
    if (Observacoes  != "")
    {
        str = str + "<br><span class=txtGreen>Observacoes: </span><span class=txtpreto>" + Observacoes + "</span>";
    }
    if (Tamanho  != "")
    {
        str = str + "<br><span class=txtGreen>Tamanho: </span><span class=txtpreto>" + Tamanho + "</span>";
    }

    return str;   
}


function changeDisplay(div) {	
	if($(div).style.display=="none"){	    
	    Effect.SlideDown(div,{ duration: 0.3, scaleFrom:2 });	
	}else{
	    $(div).hide();
	}
	
}