function clearText(thefield){
    if (thefield.defaultValue==thefield.value)
        thefield.value = ""
    else if (thefield.defaultValue=="") 
    {    
    thefield.value = thefield.defaultValue;
    thefield.focus();      
    }
    thefield.maxLength=30;
}
function returnText(thefield){
    if (""==thefield.value)
    {
    	thefield.maxLength=20;
        thefield.value = thefield.defaultValue
    }
}