function TG(a, changeTo)
{
a.style.backgroundColor = changeTo;
}
<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->

function Mostrar_Ocultar_Detalle(valor){
	if (document.getElementById(valor).style.display=="none"){
		document.getElementById(valor).style.display="";
	}else{
		document.getElementById(valor).style.display="none"
	}
}

function compruebaPregResp(){
	if (document.form1.checkbox.checked){
		document.form1.Submit.disabled=false;
		return true;
	}else{
		document.form1.Submit.disabled=true;
		return false;
	}
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function validarForm(valor2){
	patronMail=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/;
	if(!patronMail.test(frmSuscriptor.txtSuscriptor.value)){
     	document.getElementById(valor2).style.border='1px solid #FF0000';
		document.getElementById(valor2).style.background='#FFF0F0';
		return false
	}
	document.getElementById(valor2).style.border='1px solid #999999';
	document.getElementById(valor2).style.background='#FFFFFF';
	return true
}

function restaurar(valor4){
	if(document.frmSuscriptor.txtSuscriptor.value==''){
		MM_showHideLayers('ayuda','','hide');
		document.getElementById(valor4).style.border='1px solid #999999';
		document.getElementById(valor4).style.background='#FFFFFF';
		document.frmSuscriptor.txtSuscriptor.value='quiero estar al día';
	}
}

function validarFormDatos(valor, campo, tipo){
	if (tipo=='mail') {
		patronMail=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/;
		if(!patronMail.test(campo.value)){
     		document.getElementById(valor).style.border='1px solid #FF0000';
			document.getElementById(valor).style.background='#FFF0F0';
			return false;
		}
	}
	if (tipo=='fecha') {
		patronFecha=/^\d{2}\/\d{2}\/\d{4}$/;
		if(!patronFecha.test(campo.value)){
     		document.getElementById(valor).style.border='1px solid #FF0000';
			document.getElementById(valor).style.background='#FFF0F0';
			return false;
		}
	}
	if (tipo=='num'){
		if(isNaN(campo.value)){
 			document.getElementById(valor).style.border='1px solid #FF0000';
			document.getElementById(valor).style.background='#FFF0F0';
			return false;
 		}
	}
	if(campo.value==''){
		document.getElementById(valor).style.border='1px solid #FF0000';
		document.getElementById(valor).style.background='#FFF0F0';
		return false;
	}
	document.getElementById(valor).style.border='1px solid #CCCCCC';
	document.getElementById(valor).style.background='#FFFFFF';
	return true;
}

function validarSubmit(formulario){
	var obj;
  	for(var i=0;i<9;i++)
  	{
    	obj=document.forms[0].elements[i];
    	if (obj.name=='txtMail') {
			patronMail=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/;
			if(!patronMail.test(obj.value)){
     			document.getElementById(obj.name).style.border='1px solid #FF0000';
				document.getElementById(obj.name).style.background='#FFF0F0';
				return false;
			}
		}
		if (obj.name=='txtFechaNacimiento') {
			patronFecha=/^\d{2}\/\d{2}\/\d{4}$/;
			if(!patronFecha.test(obj.value)){
     			document.getElementById(obj.name).style.border='1px solid #FF0000';
				document.getElementById(obj.name).style.background='#FFF0F0';
				return false;
			}
		}
		if (obj.name=='txtCP' || obj.name=='txtTelefono'){
			if(isNaN(obj.value)){
 				document.getElementById(obj.name).style.border='1px solid #FF0000';
				document.getElementById(obj.name).style.background='#FFF0F0';
				return false;
 			}
		}
		if(obj.value==''){
			document.getElementById(obj.name).style.border='1px solid #FF0000';
			document.getElementById(obj.name).style.background='#FFF0F0';
			return false;
		}
  	}
	document.getElementById(obj.name).style.border='1px solid #CCCCCC';
	document.getElementById(obj.name).style.background='#FFFFFF';
	document.getElementById(formulario).submit()
	return true;
}

function bordeGris(valor){
	if (valor.style.border=='#000000 1px solid'){
			valor.style.border='1px solid #CCCCCC';
	}
}