function lockButtons(whichform) 
{
    ua = new String(navigator.userAgent);
    if (ua.match(/IE/g)) {
        for (i=1; i<whichform.elements.length; i++) {
            if ((whichform.elements[i].type == 'submit') || (whichform.elements[i].type == 'button'))
                whichform.elements[i].disabled = true;
        }
    }
    whichform.submit();
}

function openWindow()
{
    var newWin = null;
    var url = openWindow.arguments[0];
    nArgs = openWindow.arguments.length;
    var width = openWindow.arguments[1];
    var height = openWindow.arguments[2];

    //  if dynamic window size args are passed
    if (nArgs > 1)
        newWin =  window.open ("","newWindow","toolbar=no,width=" + width + ",height=" + height + ",directories=no,status=no,scrollbars=yes,resizable=no,menubar=no");
    else 
        newWin =  window.open ("","newWindow","toolbar=no,width=" + SGL_JS_WINWIDTH + ",height=" + SGL_JS_WINHEIGHT + ",directories=no,status=no,scrollbars=yes,resizable=no,menubar=no");
    newWin.location.href = url;
}

function confirmSubmit(item, formName)
{
    var evalFormName = eval('document.' + formName)
    var flag = false
    for (var count = 0; count < evalFormName.elements.length; count++) {
        var tipo = evalFormName.elements[count].type
        if (tipo == 'checkbox' && evalFormName.elements[count].checked == true && evalFormName.elements[count].name != '')
            flag = true 
    }
    if (flag == false) {
        alert('You must select an element to delete')
        return false
    }
    var agree = confirm("Are you sure you want to delete this " + item + "?");
    if (agree)
        return true;
    else
        return false;
}

function confirmSave(formName)
{
    var evalFormName = eval('document.' + formName)
    var flag = false
    for (var count = 0; count < evalFormName.elements.length; count++) {
        var tipo = evalFormName.elements[count].type
        if (tipo == 'checkbox' && evalFormName.elements[count].checked == true && evalFormName.elements[count].name != '')
            flag = true 
    }
    if (flag == false) {
        alert('You must select an element to save')
        return false
    }
}

function confirmSend(formName)
{
    var evalFormName = eval('document.' + formName)
    var flag = false
    for (var count = 0; count < evalFormName.elements.length; count++) {
        var tipo = evalFormName.elements[count].type
        if (tipo == 'checkbox' && evalFormName.elements[count].checked == true && evalFormName.elements[count].name != '')
            flag = true 
    }
    if (flag == false) {
        alert('You must select at least one recipient')
        return false
    }
}

function confirmCategoryDelete(item) 
{
    var agree = confirm("Are you sure you want to delete this " + item + "?");
    if (agree)
        return true;
    else
        return false;
}

function verifySelectionMade() 
{
    var moveForm = document.moveCategory.frmNewCatParentID
    var selectedCat = moveForm.value
    if(selectedCat == '') {
        alert('Please select a new parent category')
        return false;
    } else
        return true;
}

function checkInput(formName, fieldName)
{
    var f = eval('document.' + formName + '.' + fieldName)
    if (f.value == '') {
        alert('Please enter a value in the field before submitting');
        return false;
    } else
        return true;
}

function getSelectedValue(selectObj)
{
    return (selectObj.options[selectObj.selectedIndex].value);
}


function toggleDisplay(myElement)
{	
	boxElement = document.getElementById(myElement);

	if (boxElement.style.display == 'none') {
		boxElement.style.display = 'block';
	} else {
    	// ... otherwise collapse box
		boxElement.style.display = 'none';
	}
}

function confirmCustom(alertText, confirmText, formName)
{
    var evalFormName = eval('document.' + formName)
    var flag = false
    for (var count = 0; count < evalFormName.elements.length; count++) {
        var tipo = evalFormName.elements[count].type
        if (tipo == 'checkbox' && evalFormName.elements[count].checked == true && evalFormName.elements[count].name != '')
            flag = true 
    }
    if (flag == false) {
        alert(alertText)
        return false
    }
    var agree = confirm(confirmText);
    if (agree)
        return true;
    else
        return false;
}

function popup (img,sx,sy,desc,tit) {
   popupwin=window.open("","Fotos","toolbar=no,location=no,directories=no,status=no,menubar=no,top=0,left=0,width="+sx+",height="+sy+"");
   popupwin.document.write("<HTML><HEAD><TITLE>"+tit+"</TITLE></HEAD><BODY ONBLUR=\"javascript:self.close()\" leftmargin=\"0\" topmargin=\"10\" marginwidth=\"0\" marginheight=\"10\"><CENTER><a href='javascript:self.close()'><img src=" + img + " border=0 title='Clique para fechar' alt='Clique para fechar'></a><br><br><FONT face=\"Verdana\" size=\"2\">"+desc+"</CENTER></BODY></HTML>");
   popupwin.document.close();

}


//  functions to change images opacity 

function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
//	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(divid).style.display = 'block';

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}

//  end of opacity functions



function anomodelo(ano_modelo,ano_fabrica)
{
formulario=document.forms[0];
hoje = new Date();
ano_atual   = parseInt(hoje.getFullYear());
ano_modelo  = parseInt (ano_modelo);
ano_fabrica = parseInt (ano_fabrica);
if (ano_fabrica > ano_atual || ano_fabrica < 1600) {alert("Ano de Fabricação invalido !"); return false;}
if (ano_modelo != ano_fabrica && (ano_modelo != (ano_fabrica+1))) {alert("Ano fabricação ou modelo invalido !"); return false;}
return true;
}

function anofabricacaozero (ano_fabrica) {
hoje = new Date();
ano_atual   = parseInt(hoje.getFullYear());
ano_fabrica = parseInt (ano_fabrica);
if (ano_fabrica > ano_atual) {alert("Ano de Fabricação maior que o ano atual !"); return false;}
if (ano_fabrica <= ano_atual-2) {alert("Ano de fabricação muito antigo !"); return false;}
return true;
}