function chkstyle() {
var lg=screen.width

if (lg<1280 && lg>=1024) {
	document.writeln ("<style type=\"text/css\">@import url('../Stili/stili1024.css'); </style>")
}
if (lg<1024 && lg>=800) {
	document.writeln ("<style type=\"text/css\">@import url('../Stili/stili800.css'); </style>")
} 
if (lg<800) {
	document.writeln ("<style type=\"text/css\">@import url('../Stili/stilimob.css'); </style>")
} 
}