function imageholderclass(){
	this.over=new Array();
	this.down=new Array();
	this.src=new Array();
	this.store=store;
	
	function store(src, down, over){
		var AL=this.src.length;
		this.src[AL]=new Image(); this.src[AL].src=src;
		this.over[AL]=new Image(); this.over[AL].src=over;
		this.down[AL]=new Image(); this.down[AL].src=down;
	}
}

var ih = new imageholderclass();
var mouseisdown=0;

function preloader(t){
	for(i=0;i<t.length;i++){
		if(t[i].getAttribute('srcover')||t[i].getAttribute('srcdown')){
			
			storeimages(t[i]);
			var checker='';
			checker=(t[i].getAttribute('srcover'))?checker+'A':checker+'';
			checker=(t[i].getAttribute('srcdown'))?checker+'B':checker+'';
			
			switch(checker){
			case 'A' : mouseover(t[i]);mouseout(t[i]); break;
			case 'B' : mousedown(t[i]); mouseup2(t[i]); break;
			case 'AB' : mouseover(t[i]);mouseout(t[i]); mousedown(t[i]); mouseup(t[i]); break;
			default : return;			
			}
			
			if(t[i].src){t[i].setAttribute("oldsrc",t[i].src);}
		}
	}
}
function mouseup(t){
	var newmouseup;
	if(t.onmouseup){
		t.oldmouseup=t.onmouseup;
		newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("srcover");this.oldmouseup();}

	}
	else{newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("srcover");}}
	t.onmouseup=newmouseup;
}

function mouseup2(t){
	var newmouseup;
	if(t.onmouseup){
		t.oldmouseup=t.onmouseup;
		newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("oldsrc");this.oldmouseup();}
		}
	else{newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("oldsrc");}}
	t.onmouseup = newmouseup;
}

function mousedown(t){
	var newmousedown;
	if(t.onmousedown){
		t.oldmousedown=t.onmousedown;
		newmousedown=function(){if(mouseisdown==0){this.src=this.getAttribute("srcdown");this.oldmousedown();}}
	}
	else{newmousedown=function(){if(mouseisdown==0){this.src=this.getAttribute("srcdown");}}}
	t.onmousedown=newmousedown;
}

function mouseover(t){
	var newmouseover;
	if(t.onmouseover){
		t.oldmouseover=t.onmouseover;
		newmouseover=function(){this.src=this.getAttribute("srcover");this.oldmouseover();}
	}
	else{newmouseover=function(){this.src=this.getAttribute("srcover");}}
	t.onmouseover=newmouseover;
}

function mouseout(t){
	var newmouseout;
	if(t.onmouseout){
		t.oldmouseout=t.onmouseout;
		newmouseout=function(){this.src=this.getAttribute("oldsrc");this.oldmouseout();}
	}
	else{newmouseout=function(){this.src=this.getAttribute("oldsrc");}}
	t.onmouseout=newmouseout;
}

function storeimages(t){
	var s=(t.getAttribute('src'))?t.getAttribute('src'):'';
	var d=(t.getAttribute('srcdown'))?t.getAttribute('srcdown'):'';
	var o=(t.getAttribute('srcover'))?t.getAttribute('srcover'):'';
	ih.store(s,d,o);
}

function preloadimgsrc(){
	if(!document.getElementById) return;
	var it=document.getElementsByTagName('IMG');
	var it2=document.getElementsByTagName('INPUT');
	preloader(it);
	preloader(it2);
}

if(window.addEventListener){window.addEventListener("load", preloadimgsrc, false);} 
else{
	if(window.attachEvent){window.attachEvent("onload", preloadimgsrc);}
	else{if(document.getElementById){window.onload=preloadimgsrc;}}
}
//POP-UP
<!--
function popupform(myform, windowname)
{
if (! window.focus)return true;
window.open('', windowname, 'height=550,width=680,scrollbars=yes');
myform.target=windowname;
return true;
}
//-->
function abrefecha(obj) {
	
	switch (obj.id) {
		case 'primeiro':
			document.getElementById('erro').style.display="block";
			document.getElementById('divum').style.display="none";
		break
		case 'segundo':
			document.getElementById('erro').style.display="none";
			document.getElementById('divum').style.display="block";
		break
		case 'terceiro':
			document.getElementById('erro').style.display="none";
			document.getElementById('divum').style.display="none";
		break
	}
}
function checkCheckBox(f) {
  if (f.agree.checked == false) {
    alert('Please check the box to continue.');
    return false;
  } else
    return true;
}

function AbrePopUp(popurl){
var winpops=window.open(popurl,"","width=,height=,scrollbars")
}

function pularcampo(wobj,alvo,maxlenght){
    if (document.getElementById(wobj).value.length==maxlenght){
        document.getElementById(alvo).focus();
        }
    }
//SELECT
/*
    // <![CDATA[
    function selectReplacement(obj) {
      obj.className += ' replaced';
      var ul = document.createElement('ul');
      ul.className = 'selectReplacement';
      var opts = obj.options;
      for (var i=0; i<opts.length; i++) {
        var selectedOpt;
        if (opts[i].selected) {
          selectedOpt = i;
          break;
        } else {
          selectedOpt = 0;
        }
      }
      for (var i=0; i<opts.length; i++) {
        var li = document.createElement('li');
        var txt = document.createTextNode(opts[i].text);
        li.appendChild(txt);
        li.selIndex = opts[i].index;
        li.selectID = obj.id;
        li.onclick = function() {
          selectMe(this);
        }
        if (i == selectedOpt) {
          li.className = 'selected';
          li.onclick = function() {
            this.parentNode.className += ' selectOpen';
            this.onclick = function() {
              selectMe(this);
            }
          }
        }
        if (window.attachEvent) {
          li.onmouseover = function() {
            this.className += ' hover';
          }
          li.onmouseout = function() {
            this.className = 
              this.className.replace(new RegExp(" hover\\b"), '');
          }
        }
        ul.appendChild(li);
      }
      obj.parentNode.insertBefore(ul,obj);
    }
    function selectMe(obj) {
      var lis = obj.parentNode.getElementsByTagName('li');
      for (var i=0; i<lis.length; i++) {
        if (lis[i] != obj) {
          lis[i].className='';
          lis[i].onclick = function() {
            selectMe(this);
          }
        } else {
          setVal(obj.selectID, obj.selIndex);
          obj.className='selected';
          obj.parentNode.className = 
            obj.parentNode.className.replace(new RegExp(" selectOpen\\b"), '');
          obj.onclick = function() {
            obj.parentNode.className += ' selectOpen';
            this.onclick = function() {
              selectMe(this);
            }
          }
        }
      }
    }
    function setVal(objID, selIndex) {
      var obj = document.getElementById(objID);
      obj.selectedIndex = selIndex;
    }
    function setForm() {
      var s = document.getElementsByTagName('select');
      for (var i=0; i<s.length; i++) {
        selectReplacement(s[i]);
      }
    }
    window.onload = function() {
      (document.all && !window.print) ? null : setForm();
    }
    // ]]>
*/