// JavaScript Document
<!--
//	var letters=' ABCÇDEFGHIJKLMNÑOPQRSTUVWXYZabcçdefghijklmnñopqrstuvwxyzàáÀÁéèÈÉíìÍÌïÏóòÓÒúùÚÙüÜ'
	var letters='ABCÇDEFGHIJKLMNÑOPQRSTUVWXYZabcçdefghijklmnñopqrstuvwxyzáÁéÉíÍóÓúÚüÜ'
	var alphanum='ABCÇDEFGHIJKLMNÑOPQRSTUVWXYZabcçdefghijklmnñopqrstuvwxyzáÁéÉíÍóÓúÚüÜ0123456789'
	var signs=',.:;@-\''
	var mathsigns='+-=()*/'
	var custom='<>#$%&?¿'
	
	function alpha(e,allow) 
	{
		var k;
		//k=document.all?parseInt(e.keyCode): parseInt(e.which);
		//alert(k);
		//k = e.keyCode;
		k= document.all?parseInt(e.keyCode): parseInt(e.which);
		if (e.keyCode=='8')
			void(0)
		else
			return (allow.indexOf(String.fromCharCode(k))!=-1);
	}	
	
	function hidelayers(lname){
		
		if (lname!='')
		{
			if (lname=='OverRequisitosUsa')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'visible';
				document.getElementById('overabac').style.visibility= 'hidden';
				document.getElementById('overforo').style.visibility= 'hidden';
				document.getElementById('overtlc').style.visibility= 'hidden';
				document.getElementById('menu').style.visibility= 'hidden';
				document.getElementById('menuacuerdos').style.visibility= 'hidden';
			}
			if (lname=='overabac')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';
				document.getElementById('overabac').style.visibility= 'visible';
				document.getElementById('overforo').style.visibility= 'hidden';
				document.getElementById('overtlc').style.visibility= 'hidden';
				document.getElementById('menu').style.visibility= 'hidden';
				document.getElementById('menuacuerdos').style.visibility= 'hidden';
			}
			if (lname=='overforo')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';
				document.getElementById('overabac').style.visibility= 'hidden';
				document.getElementById('overforo').style.visibility= 'visible';
				document.getElementById('overtlc').style.visibility= 'hidden';
				document.getElementById('menu').style.visibility= 'hidden';
				document.getElementById('menuacuerdos').style.visibility= 'hidden';
			}
			if (lname=='overtlc')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';
				document.getElementById('overabac').style.visibility= 'hidden';
				document.getElementById('overforo').style.visibility= 'hidden';
				document.getElementById('overtlc').style.visibility= 'visible';
				document.getElementById('menu').style.visibility= 'hidden';
				document.getElementById('menuacuerdos').style.visibility= 'hidden';
			}
			if (lname=='menu')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';
				document.getElementById('overabac').style.visibility= 'hidden';
				document.getElementById('overforo').style.visibility= 'hidden';
				document.getElementById('overtlc').style.visibility= 'hidden';
				document.getElementById('menu').style.visibility= 'visible';
				document.getElementById('menuacuerdos').style.visibility= 'hidden';
			}
			if (lname=='menuacuerdos')
			{
				document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';
				document.getElementById('overabac').style.visibility= 'hidden';
				document.getElementById('overforo').style.visibility= 'hidden';
				document.getElementById('overtlc').style.visibility= 'hidden';
				document.getElementById('menu').style.visibility= 'hidden';
				document.getElementById('menuacuerdos').style.visibility= 'visible';
			}
		}
		else
		{
			document.getElementById('overabac').style.visibility= 'hidden';
			document.getElementById('overforo').style.visibility= 'hidden';
			document.getElementById('overtlc').style.visibility= 'hidden';
			document.getElementById('menu').style.visibility= 'hidden';
			document.getElementById('menuacuerdos').style.visibility= 'hidden';
			document.getElementById('OverRequisitosUsa').style.visibility= 'hidden';		
			
		}
	}
	

// -->