function checkText(form){
{
txt2=document.help.text.value;
if (txt2 == "") {alert("Enter text!"); return(false) 
}
else
{
browser = new String(navigator.userAgent); if (browser.match(/IE/g)) 
{for (i=1; i<form.elements.length; i++)
{
if(form.elements[i].type == 'submit')
{
form.elements[i].disabled = true;
}
}
}
} };
}