var but=new Image();
but.src='/images/buttons/b1.gif';
var but1=new Image();
but1.src='/images/buttons/b2.gif';
var but2=new Image();
but2.src='/images/buttons/b3.gif';
var butr1=new Image();
butr1.src='/images/buttons/br2.gif';
var butr2=new Image();
butr2.src='/images/buttons/br3.gif';