function marcar_caja(src, color)
{
	src.style.background = color;
	src.style.color='black'; 
	
}
function desmarcar_caja(src)
{
		src.style.background = 'white';
		//src.style.borderBottom = '2px 2px solid #BC0A2C';
}


function pulsar_intro(evt)
{
	var keyCode = evt.which ? evt.which : evt.keyCode;
	if(keyCode==13)
			return true;	
	else		
		return false;
}


function validarEsNumerico (evt) {
  var keyCode = evt.which ? evt.which : evt.keyCode;
 // alert(keyCode);
  if( keyCode >= 48 && keyCode <= 57 )
  	return true;
/*  else if (keyCode <= 32)
  	return true;*/
  else if(keyCode >= 96 && keyCode <= 105)	 
  	return true;
 switch(keyCode) 
 {
 	case 8:  	/*Del*/
 	case 9:  	/*TAB*/
 	case 16: 	/*SHIFT*/
 	case 17: 	/*Control*/
 	case 19: 	/*pause*/
 	case 20: 	/*Bloq May*/
 	case 33: 	/*Re Pag*/
 	case 34: 	/*Av Pag*/
 	case 35: 	/*Fin*/
 	case 36: 	/*Inicio*/
 	case 37: 	/*Flecha Izq*/		
 	case 38: 	/*Flecha Arriba*/	
 	case 39: 	/*Flecha Der*/
 	case 40: 	/*Flecha Abajo*/	
	case 45: 	/*Ins*/
	case 46: 	/*Supr*/
	case 91: 	/*Windows*/
	//case 32: 	/*Barra Espaciadora*/
	case 93: 	/*Propiedades*/
	case 112:	/*f1*/
	case 113:	/*f2*/
	case 114:	/*f3*/
	case 115:	/*f4*/
	case 116:	/*f5*/
	case 117: 	/*f6*/
	case 118: 	/*f7*/
	case 119: 	/*f8*/
	case 120: 	/*f9*/
	case 121: 	/*f10*/
	case 122: 	/*f11*/
	case 123: 	/*f12*/
	case 145: 	/*Bloq Desplaz*/
	 return true;
	default: 
		return false; 	
 }
  	
  return false;	
  
  
  
  //return  keyCode >= keyCode >= '0'.charCodeAt() && keyCode <= '9'.charCodeAt(); 
}
function validarEsDecimal (evt) {
  var keyCode = evt.which ? evt.which : evt.keyCode;
 // alert(keyCode);
  if( keyCode >= 48 && keyCode <= 57 )
  	return true;
/*  else if (keyCode <= 32)
  	return true;*/
  else if(keyCode >= 96 && keyCode <= 105)	 
  	return true;
 switch(keyCode) 
 {
 	case 8:  	/*Del*/
 	case 9:  	/*TAB*/
 	case 16: 	/*SHIFT*/
 	case 17: 	/*Control*/
 	case 19: 	/*pause*/
 	case 20: 	/*Bloq May*/
 	case 33: 	/*Re Pag*/
 	case 34: 	/*Av Pag*/
 	case 35: 	/*Fin*/
 	case 36: 	/*Inicio*/
 	case 37: 	/*Flecha Izq*/		
 	case 38: 	/*Flecha Arriba*/	
 	case 39: 	/*Flecha Der*/
 	case 40: 	/*Flecha Abajo*/
 	case 45: 	/*Ins*/
	case 46: 	/*Supr*/
	case 91: 	/*Windows*/
	//case 32: 	/*Barra Espaciadora*/
	case 93: 	/*Propiedades*/
	case 110:   /*. Teclado Num*/
	case 112:	/*f1*/
	case 113:	/*f2*/
	case 114:	/*f3*/
	case 115:	/*f4*/
	case 116:	/*f5*/
	case 117: 	/*f6*/
	case 118: 	/*f7*/
	case 119: 	/*f8*/
	case 120: 	/*f9*/
	case 121: 	/*f10*/
	case 122: 	/*f11*/
	case 123: 	/*f12*/
	case 145: 	/*Bloq Desplaz*/
	case 188:   /*,*/
	case 190:	/*.*/
	
	 return true;
	default: 
		return false; 	
 }
  	
  return false;	
  
  
  
  //return  keyCode >= keyCode >= '0'.charCodeAt() && keyCode <= '9'.charCodeAt(); 
}