function for document.getElementById():
Always try to shorten your coding, so that you will be able to understand it in future.
Use a function for document.getElementById(), so that it will avoid you each and everytime typing the line "document.getElementById('something').innerHTML/style/value/something else...."
For Eg,
function d(s){
return document.getElementById(s);
}
Just call the function as,
d('test').style.border="1px solid green";
Thus this way of coding shortens your line of code.......
