How to get jquery default style after changing input style?

[benlittle]

I have a text input which I validate its value when event "blur" triggers .when the value is not valid , I change the input background color , and when I resolved the error I want the original color and style of the input to be set again to it .but what's happening that I'm losing the original style after resolving the error or getting the error , in general that's happening when changing input's style .I tried to look for the original style to set it again but I couldn't find it in jqueryui styles .need your help :HTML Code :\[code\]<input type='text' name='val1' id='val1'/> \[/code\]jQuery Code :\[code\]function is_numeric(value){ var pattern= new RegExp(/^[0-9]+$/); return pattern.test(value);}$(document).ready(function (){ $('#val1').blur(function() { if(!is_numeric($('#val1').val())) { $('#val1').css('background-color','#E65050'); } else { $('#va1').css('background-color','white '); /// here ?? } }); });\[/code\]