function rollOn(obj){file=obj.src;obj.src=file.replace('_Off','_On');}
function rollOff(obj){file=obj.src;obj.src=file.replace('_On','_Off');}

var Key='';
function keyhandler(e) {
   	if ((Key >=48 && Key <=57) || (Key >=96 && Key <=105) || Key==46 || Key==8 || Key==9 || (Key >=37 && Key <=40)){return true}else{return false};
}

function validarEmail(valor) {
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(valor)){
		return (true);
	} else {
		return (false);
	}
}

function BuscarWeb(validaciontextobuscador){
	ok=true;
	obj=document.busqueda;
	if(obj.buscar.value=='' && ok){alert(validaciontextobuscador);obj.buscar.focus();ok=false;}
	if(ok){
		obj.submit();
	}
}