here i will give you an example on how you can make variables into lower case. to change your string or variable vablues in javascript comes with a handy function to make all your text and letters into non capital letters into lower case letters

the function is toLowerCase

example:

var SiteTitle='WALLPAPERAMA WALLPAPERS';
var SiteTitleLower=SiteTitle.toLowerCase();


the above will output: wallpaperama walllpapers instead of WALLPAPERAMA WALLPAPERS

incase you want to change the text to upper case you can use the toUpperCase() function

HOPE THAT HELPS