function aumenta_txt(objID){


var obj = document.getElementById(objID);
var fsize=obj.style.fontSize;
var fsize2=fsize.split("px");
fsize2=parseInt(fsize2[0]);
//alert(fsize2);
if(fsize==""){
obj.style.fontSize="12px";
}else if(fsize!="" && fsize2<=15){
fsize2=fsize2+1;
obj.style.fontSize=fsize2 + "px";
}



}
function diminui_txt(objID){
  var obj = document.getElementById(objID);
  var fsize=obj.style.fontSize;
  var fsize2=fsize.split("px");
  fsize2=parseInt(fsize2[0]);
  //alert(fsize2);
  if(fsize!=""  &&  fsize2!=12){
    fsize2=fsize2-1;
    obj.style.fontSize=fsize2 + "px";
  }
}
//IMAGE TO GRAY
function prepareMouseOverImage(image, originalURL)
{

  // Save the original Image URL
  image.mouseOverImage=originalURL;

  // Create the grayscale image
  image.normalImage=grayscale(image, false);


  // Override the old handler (otherwise the onmouse over event handler will

  // call it again).
  image.onload=function(){return true;};



  // Assign onmouseover and onmouseout event handlers
  image.onmouseover=function()
  {
    this.src=this.mouseOverImage;
  }
	
  image.onmouseout=function()
  {
    this.src=this.normalImage;
  }

  
  // Set the grayscale as the "normal" state image
  image.src=image.normalImage;	
}


function grayscale(image, bPlaceImage)
{
  var myCanvas=document.createElement("canvas");
  var myCanvasContext=myCanvas.getContext("2d");

  var imgWidth=image.width;
  var imgHeight=image.height;
  // You'll get some string error if you fail to specify the dimensions
  myCanvas.width= imgWidth;
  myCanvas.height=imgHeight;
//  alert(imgWidth);
  myCanvasContext.drawImage(image,0,0);
  // this function cannot be called if the image is not rom the same domain.  You'll get security error
  var imageData=myCanvasContext.getImageData(0,0, imgWidth, imgHeight);
  for (i=0; i<imageData.height; i++)
  {
    for (j=0; j<imageData.width; j++)
    {
	  var index=(i*4)*imageData.width+(j*4);
	  var red=imageData.data[index];	  
	  var green=imageData.data[index+1];
	  var blue=imageData.data[index+2];	  
	  var alpha=imageData.data[index+3];	 
	  var average=(red+green+blue)/3; 	  
   	  imageData.data[index]=average;	  
   	  imageData.data[index+1]=average;
   	  imageData.data[index+2]=average;
   	  imageData.data[index+3]=alpha;	  	  
	}
  }
  myCanvasContext.putImageData(imageData,0,0,0,0, imageData.width, imageData.height);
 // myCanvasContext.drawIMage(imageData,0,0);//,0,0, imageData.width, imageData.height);  
  
  if (bPlaceImage)
  {  
	  var myDiv=document.createElement("div");  
	  myDiv.appendChild(myCanvas);
	  image.parentNode.appendChild(myCanvas);//, image);
  }
  return myCanvas.toDataURL();
}

function imagetoGray (elemento){  
  elemento.style.filter = "gray";
}

function imagetoNormal (elemento){
  elemento.style.filter = "none";
}

var OBJ;
var total;
var elem = new Array();
 function formErros(obj)
{
OBJ=obj;
total=obj.length;

var frmObj=OBJ.form;
objID=obj.id;

  
 elem = frmObj.elements;
 
  for(i = 0; i < elem.length; i++){
  
  if(elem[i].id==objID){
    document.getElementById(objID).style.borderColor="#FF0000";
    
    var lbl=document.getElementById("lbl_" + objID);
    
    if(lbl!=null){
       lbl.style.color="#FF0000";
    }
    
  }
  
  }
}

// ABRE E FECHA TUDO

function showArt(id) {
  
  var el = document.getElementById("imagemArtigo"+id);
  var el2 = document.getElementById("titArtigo"+id);
  var tit = document.getElementById("titBlc"+id);
  
  var xclose = document.getElementsByTagName("tr");
  var tds = document.getElementsByTagName("td");
  var imgs = document.getElementsByTagName("img");
  
  for (var i=0; i<xclose.length; i++) {
    if (xclose[i].className == "fechar"){
      xclose[i].style.display = "none";
     
    }
  }
  for (var i=0; i<tds.length; i++) {
    if(tds[i].className == "artigoEscondido"){
      tds[i].className = "artigos";
      tds[i].onmouseover= mouseEMH[0];
      tds[i].onmouseout= mouseEMH[1];
    }
  }
   for (var i=0; i<imgs.length; i++) {
    if(imgs[i].className == "titBlc"){
      
      var id_img = imgs[i].id;
      id_img=id_img.split("titBlc");
      //alert(id_img[1]);
      imgs[i].src = titBlc1[id_img[1]];
    }
  }
  if(el!=null){
    el.style.display = "block";
  }
  if(el2!=null){
    el2.className='artigoEscondido';
    el2.onmouseout= mouseEMH[2];
    el2.onmouseover= mouseEMH[2];
  }
  if(tit!=null){
    tit.src= titBlc2[id];
  }
  
}



//POPUP

function popUp()
{
  
  var tamanhoW = document.body.clientWidth;
  var tamanhoH = document.body.clientHeight;  
  
  var ppContent = document.getElementById('bgPopUp');  
  ppContent.style.top = (tamanhoH/2) - (ppContent.clientHeight/2);
  ppContent.style.left = (tamanhoW/2 - 328) - (ppContent.clientWidth/2);
  
  document.getElementById('popUpTrans').style.display = "block";
  document.getElementById('bgPopUp').style.display = "block";
  
  
  
  //var fecha = setTimeout(closepopUp,100);
      
}

function closepopUp()
{
  document.getElementById('popUpTrans').style.display = "none";
  document.getElementById('bgPopUp').style.display = "none";

}



// SUBMENU
function showSub(id)
{
  document.getElementById(id).style.display = "block";
}

function hideSub(id){
  document.getElementById(id).style.display = "none";
}