function iniciar_calendario(elem,campo){

	idCampofecha=campo;
	idContenedor=elem;
	
	if(idContenedor=="miCalendario1")elemBorrar="miCalendario2";
	if(idContenedor=="miCalendario2")elemBorrar="miCalendario1";

	if(document.getElementById('calendario')){

		
		if(document.getElementById(elemBorrar).style.visibility=="visible"){
			document.getElementById(elemBorrar).removeChild(document.getElementById('calendario'));
			document.getElementById(elemBorrar).style.visibility="hidden";
		}
		else if(document.getElementById(idContenedor)){
			document.getElementById(idContenedor).removeChild(document.getElementById('calendario'));
		}
		
	}
	
	if(document.getElementById(idContenedor).style.visibility=="visible"){
		document.getElementById(idContenedor).style.visibility="hidden";
		
	}else{
		document.getElementById(idContenedor).style.visibility="visible";
		tunCalendario();
		establecerFecha();
		
	}
	
}
function calendar(campo)
{
	window.open('cal.php?campo='+campo, 'calendario','width=190,height=165,scrollbars=no,top='+(screen.height-400)/2+',left='+(screen.width-210)/2);
}

// JavaScript Document 
function hidediv(capa){
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById(capa).style.visibility = 'hidden';
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.capa.visibility = 'hidden'; 
		} 
		else { // IE 4 
			document.all.capa.style.visibility = 'hidden'; 
		} 
	} 
} 
	 
function showdiv(capa) { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById(capa).style.visibility = 'visible'
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.capa.visibility = 'visible'; 
		} 
		else { // IE 4 
			document.all.capa.style.visibility = 'visible';
		} 
	} 
}

//para los precios

function suma()    { 
    var miTabla = document.getElementById("cuerpoTabla"); 
    var fila = document.createElement("tr"); 
    var celda1 = document.createElement("td"); 
    var celda2 = document.createElement("td");
	var celda3 = document.createElement("td"); 
	var celda4 = document.createElement("td"); 
	var celda5 = document.createElement("td"); 
	var celda6 = document.createElement("td"); 
    
	celda1.innerHTML = "<input name='precio[]' type='text' style='width:100' class='input' onBlur=\"if(this.value==''){this.value='TIPO'};\" onFocus=\"if(this.value=='TIPO') {this.value=''} ;\" value='TIPO'>"; 
	celda2.innerHTML = "<input name='precio[]' type='text' style='width:100' class='input'>"; 
	celda3.innerHTML = "<input name='precio[]' type='text' style='width:100' class='input'>"; 
	celda4.innerHTML = "<input name='precio[]' type='text' style='width:100' class='input'>"; 
	celda5.innerHTML = "<input name='precio[]' type='text' style='width:100' class='input'>"; 
	celda6.innerHTML = "<img src='../imagenes/cruz_eliminar.gif' width='16' height='16' border='0' align='absmiddle' style='cursor:pointer;' onClick='restar(this);'>";
	fila.appendChild(celda1); 
    fila.appendChild(celda2); 
	fila.appendChild(celda3); 
	fila.appendChild(celda4); 
	fila.appendChild(celda5); 
	fila.appendChild(celda6); 
    miTabla.appendChild(fila); 
} 

function restar(imag) { 
	
    var miTabla = document.getElementById("cuerpoTabla"); 
		var total=miTabla.getElementsByTagName("tr").length;
		
		for (x=0; x < total; x++){
			miTabla.childNodes[x].id=x;
		}
		
		var num = imag.parentNode.parentNode.id;
			
    miTabla.deleteRow(num); 
}