var checkflag = "false";
var tam=12;

function limpaInput(id, valor)
{	
	ident = id.id;
    input = document.getElementById(ident).value;

    if (input == valor)
    {
        document.getElementById(ident).value = "";
    }
    else
    {
        document.getElementById(ident).value = input;
    }
}

function restauraInput(id, valor)
{
	ident = id.id;
    input = document.getElementById(ident).value;
    
    if(input == "")
    {
        document.getElementById(ident).value = valor;
    }
    else if ((input != valor) && (input != ""))
    {
        document.getElementById(ident).value = input;
    }
}
function check(field) 
{
        if (checkflag == "false") 
        {
            for (i = 0; i < field.length; i++) 
            {
                field[i].checked = true;
            }
            checkflag = "true";
            return true;
        }
        else 
        {
            for (i = 0; i < field.length; i++) 
            {
                field[i].checked = false;
            }
            checkflag = "false";
            return true;
        }
}
function MM_jumpMenu(targ,selObj,restore)
{ //v3.0
	  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	  if (restore) selObj.selectedIndex=0;
}
function fechar_janela(x,y) 
{
	alert(x);
	window.location.replace(y);
}
function tamanhoFonte(tipo) 
{
	if (tipo=="mais")
	{
		if(tam<16) tam+=2;
	}
	else
	{
		if(tam>10) tam-=2;
	}
	document.getElementById('selcorpo').style.fontSize=tam+'px' ;
}

/* ajax */
function getXmlHttp() 
{
	var xmlhttp;
	try
	{
		xmlhttp = new XMLHttpRequest();
	}
	catch(ee)
	{
		try
		{
			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(E)
			{
				xmlhttp = false;
			}
		}
	}
	return xmlhttp;
} 
function abrejanela(link, nome, w, h, t, l, features) { //v2.0
	window.open(link,nome,'width='+w+',height='+h+', top='+t+',left='+l+','+features);
}

function envia(x) {
    window.open('enviaamigo.php?x='+x,'Materia','width=415, height=380, menubar=no, status=no, toolbar=no, scrollbars=no, resizable=no');
}

function imprimir(page) {
    window.open(page,"Imprimir","width=700, height=600, toolbars=no, status=no, menubar=no, scrollbars=yes, resizable=no");
}
function printme() {
	if ( window.print ) {
		window.print();
	}
}