JQuery :: Looping Through All Elements Of A Form And Keeping Track Of Different Font Size?

i have created an option on a website to give the possibity to the user to change the font size (smaller, bigger, reset), like the famous x3 'A' that we see in most of the websites. the code i have is based on a plugin copywrite to [URL]. now i'm facing a problem with different font size for different elements. to make the text bigger and smaller works like a charm but to reset the font size is not working so good. here is the code of the plug in the reset part:

//on clicking default font size button, font size is reset
jQuery(container + " .defaultFont").click(function(){
jQuery("#content *").css('font-size', defSize);
// coockie to rememebr the selected font size
updatefontCookie(target, defSize);
});

here is how i'm calling the function: fontSize("#container", "#content *", 8, 12, 20); container is where i have the images to make the text smaller or bigger content is the div that has the content that i want it to be changed 8 is the smallest fonr size 12 default 20 max now the thing is that i have different font sizes in the page and some of them don't have a class just the <font> ....</font> when i'm clicking the rest button then i'm getting everything with size 12 and this is what i want to change. i want to remember the current font size and set it back.