/*
				Display Capas según expresion regular contra el id
				*/
				function nonecapas(tag,patron)
				{
					var exp_reg = new RegExp(patron);
					var aux=document.getElementsByTagName(tag);
					for(var i=0; i<aux.length; i++)
					{
						if(exp_reg.test(aux[i].id))
						{
							capaNone(aux[i].id);
						}
					}
				}


				function capaBlock(id)
				{
					if (document.layers) document.layers[''+id+''].display = "block"
					else if (document.all) document.all[''+id+''].style.display = "block"
						else if (document.getElementById) document.getElementById(''+id+'').style.display = "block"
						}

						function capaNone(id)
						{
							if (document.layers) document.layers[''+id+''].display = "none"
							else if (document.all) document.all[''+id+''].style.display = "none"
								else if (document.getElementById) document.getElementById(''+id+'').style.display = "none"
								}

								function esBlock(id)
								{
									if (document.layers)
									{
										if (document.layers[''+id+''].display == "none")
										return false;
										else
											return true;
										}
										else if (document.all)
											{
												if(document.all[''+id+''].style.display == "none")
												return false;
												else
													return true;
												}
												else if (document.getElementById)
													{
														if(document.getElementById(''+id+'').style.display == "none")
														return false;
														else
															return true;
														}

													}

													function cambiaBlock(id)
													{
														if(esBlock(id))
														{
															capaNone(id);
														}
														else
															{
																capaBlock(id);
															}
														}

														function chstylepreg(tag,patron,styl)
				{
					var exp_reg = new RegExp(patron);
					var aux=document.getElementsByTagName(tag);
					for(var i=0; i<aux.length; i++)
					{
						if(exp_reg.test(aux[i].id))
						{
							aux[i].className=styl;
						}
					}
				}

	function chstyle(ele,styl)
				{
					var aux=document.getElementsByTagName(ele).className=styl;
				}