var fWidth = '750';

var table = document.getElementsByTagName('table');
for(t=0; t<table.length; t++) {
    if(table.item(t).width == "92%") {
        table.item(t).width = fWidth;
    }
}
document.getElementById('main_table').width = fWidth;

document.getElementsByTagName('font').item(1).style.display="none";