function white_space(field)
{
     field.value = (field.value).replace(/^\s*/g,'');
}
function check()
{
if(document.search.word.value=="" || document.search.word.value==" " || document.search.word.value=="Enter keyword")
{
alert("Please enter any keyword");
return false;
}
if(document.search.word.value.length < 3)
{
alert("Please enter min 3 charcter");
return false;
}
else
{
return true;
}
}