// JavaScript Document

// alterar tamanhjo da fonte
var tgs = new Array( 'div','td','tr','select','a', 'p', 'span');
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 2;
function ts( trgt,inc )
{
	if (!document.getElementById) return
	var d = document,cEl = null,sz = startSz,i,j,cTags;
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 4 ) sz = 4;
	startSz = sz;
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];
	cEl.style.fontSize = szs[ sz ];
	for ( i = 0 ; i < tgs.length ; i++ ) 
	{
		cTags = cEl.getElementsByTagName( tgs[ i ] );
		for ( j = 0 ; j < cTags.length ; j++ ) 
		{
			cTags[ j ].style.fontSize = szs[ sz ];
		}
	}
}
//-----------------//////////////////////////////////

//----Alterar tipo de fonte ---------------------
var startFm=0;
function AlteraFonte(trgt,inc)
{	
	var fontes = new Array( 'Humanst521 BT','Calibri','Times','Arial');
	if (!document.getElementById) return
	var d = document,cEl = null,sz = startFm,i,j,cTags;
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 3 ) sz = 0;
	startFm = sz;
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];
	cEl.style.fontFamily = fontes[ sz ];
	for ( i = 0 ; i < tgs.length ; i++ ) 
	{
		cTags = cEl.getElementsByTagName( tgs[ i ] );
		for ( j = 0 ; j < cTags.length ; j++ ) 
		{
			cTags[ j ].style.fontFamily = fontes[ sz ];
		}
	}
}
/////////////------------------/////////////////

//----Alterar cor fundo e fonte ---------------------
var startCo=0;
function AlteraContraste(trgt,inc)
{	
	//var fontes = new Array( 'Humanst521 BT','Calibri','Times','Arial');
	if (!document.getElementById) return
	if ( inc == 1 ) // contraste escuro
	{
		if ( !( cEl = document.getElementById( trgt )) ) cEl = document.getElementsByTagName( trgt )[ 0 ];
		//cEl.style.fontFamily = fontes[ sz ];
		for ( i = 0 ; i < tgs.length ; i++ ) 
		{
			cTags = cEl.getElementsByTagName( tgs[ i ] );
			for ( j = 0 ; j < cTags.length ; j++ ) 
			{
				cTags[ j ].style.color = "green";
				cTags[ j ].style.backgroundColor= "#000000";
				//cTags[ j ].style.border= "solid";
				/*document.getElementById('Table_menu').style.borderRightStyle='solid';
				document.getElementById('Table_menu').style.borderRightColor='red';*/
			}
		}
		
		Imagens = document.getElementsByTagName( 'img' );
		for ( k = 0 ; k < Imagens.length ; k++ ) 
		{
			var caminhoReal=caminhoInicio=caminhoFim="";
			caminhoReal=Imagens[ k ].src;
			caminhoInicio=caminhoReal.substr(0,(caminhoReal.length-4));
			caminhoFim=caminhoReal.substr((caminhoReal.length-3),3);
			//Imagens[ j ].src=caminhoInicio+'-cont.'+caminhoFim;
			if(Imagens[ k ].className=="LogoUemg")
			Imagens[ k ].src='images/topoN.jpg';
			/*else if(Imagens[ k ].className=="LogoUemg2")
			Imagens[ k ].src='images/topoN2.jpg';*/
			else
			Imagens[ k ].src='../acessibilidade/sem.png';
		}
	}
	if ( inc == 2 ) // contraste normal
	{
		history.go(0);
	}
}
/////////////------------------/////////////////