function menuOver(menuitem){
	document.getElementById(menuitem).style.backgroundColor='#444444';
	document.getElementById(menuitem).style.color='#ffffff';
}


function menuOut(menuitem){
	document.getElementById(menuitem).style.backgroundColor='#777777';
	document.getElementById(menuitem).style.color='#CCCCCC';
}


function changeImg(){
	  rand = Math.floor(Math.random()*1000000000000);
	  document.getElementById('codimg').src='../imagem.php?'+rand;
}


function changeImg2(){
	  rand = Math.floor(Math.random()*1000000000000);
	  document.getElementById('codimg').src='imagem.php?'+rand;
}