var ht = document.body.clientHeight-125;
var h0 = parseInt(ht/20);
var htl1 = h0*10-12;
var htl2 = h0*3-12;
var htl3 = h0*7-12;
var htr1 = h0*8-12;
var htr2 = h0*7-12;
var htr3 = h0*5-12;
document.write('<style type="text/css">');
document.write('.ifr { height:'+ht+'px;}');
document.write('.ifrl1 { height:'+htl1+'px;}');
document.write('.ifrl2 { height:'+htl2+'px;}');
document.write('.ifrl3 { height:'+htl3+'px;}');
document.write('.ifrr1 { height:'+htr1+'px;}');
document.write('.ifrr2 { height:'+htr2+'px;}');
document.write('.ifrr3 { height:'+htr3+'px;}');
document.write('#imc { height:'+(ht-60)+'px;}');
document.write('</style>');