function $(oid){
   if(oid)
     return document.getElementById(oid);
   else 
     return null;	
}

function wiew(img,width){
	layershow();
	
	$('belsolayerimage').src = img;
	
	$('belsolayerfej').innerHTML = img;
}

function keptolt(img,width){
	 if( typeof( window.pageYOffset ) == 'number' ) {
		 eltol = window.pageYOffset;
	 }else {
		 eltol = document.documentElement.scrollTop;
	 }
	 
	 im  = new Image();
	 im.src = img;
	 width = im.width;
	 height = im.height;
	 
	$('fulllayers').style.visibility = 'visible';
	$('fulllayers').style.width = '100%';
	$('fulllayers').style.height = $('defaultlayer').offsetHeight+'px';
	/*$('fulllayers').style.height = window.screen.height;*/
	$('fulllayers').style.zIndex = '10';
	$('belsolayer').style.zIndex = '11';
	$('belsolayer').style.top = 50+eltol+'px';
	
	$('belsolayer').style.visibility = 'visible';
	$('belsolayer').style.width = width+'px';
	$('belsolayerfej').style.visibility = 'visible';
	$('belsolayerfej').style.width = width;
	$('belsolayerimage').src = img;
	$('belsolayer').style.height = 'auto';
}


function layershow(){
	 if( typeof( window.pageYOffset ) == 'number' ) {
		 eltol = window.pageYOffset;
	 }else {
		 eltol = document.documentElement.scrollTop;
	 }
	$('fulllayers').style.visibility = 'visible';
	$('fulllayers').style.width = '100%';
	$('fulllayers').style.height = $('defaultlayer').offsetHeight;
	/*$('fulllayers').style.height = window.screen.height;*/
	$('fulllayers').style.zIndex = '10';
	$('belsolayer').style.zIndex = '11';
	$('belsolayer').style.top = 50+eltol;
	
	$('belsolayer').style.visibility = 'visible';
	$('belsolayer').style.width = 'auto';
	$('belsolayerfej').style.visibility = 'visible';
	$('belsolayerfej').style.width = width;
	
	if(height>0){
		$('belsolayer').style.height = height;
	}else{
		$('belsolayer').style.height = 'auto';
	}
}

function tartalomtolt(szoveg,width,height){
	
	layershow(width,height);
	
	$tolt = new Ajax();
	tolt.url = 'load/tolt.php';
	tolt.post = 'str='+szoveg+'';
	tolt.divname = 'belsolayeradat';
	tolt.betolt();
}	

function layerclose(){
	$('fulllayers').style.width = '0%';
	$('fulllayers').style.visibility = 'hidden';
	$('fulllayers').style.height = '0%';
	$('fulllayers').style.zIndex = '-99';
	$('belsolayer').style.zIndex = '-100';
	$('belsolayer').style.visibility = 'hidden';
	$('belsolayerimage').src = '/images/loading.png';
}

function divkapcs(nev,ertek){
  if(ertek){
    document.getElementById(nev).style.display='block';
  }else{
    document.getElementById(nev).style.display='none';
  }
}

function csakszam(el)
{
	var ujstr = ""
	for (var i = 0;i < $(el).value.length;i++)
	{
		if (!isNaN(parseInt($(el).value.charAt(i))))
		{
			ujstr += $(el).value.charAt(i)
		}
	}
	$(el).value = ujstr;
}