function verificaSO() {
	var agt=navigator.userAgent.toLowerCase();
			
			//alert(agt);
            
            // *** PLATFORM ***
			var is_win   = ( (agt.indexOf("win")!=-1) ||(agt.indexOf("16bit")!=-1) );
						
			
			if(is_win)
			{
				return true;
			}
			else
			{
				return false
			}
}




function checkkey(){
if(document.post.keyword.value.length == 0)
	{
	alert('value can not be empty');
	document.post.keyword.focus();
	return false();
	} 		

}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}