function GetIEversion() {
var version=0;
if(navigator.appName.indexOf('Internet Explorer') != -1)
{
var temp=navigator.appVersion.split('MSIE');
version=parseFloat(temp[1]);
}
return version;
}

function IsIE78Moz() {
var version = GetIEversion();
return ((version > 6) || (version == 0));
}

function UnsetDefValue(senderel) {
if (senderel.value == senderel.getAttribute('defvalue')) {senderel.value='';};
}

function SetDefValue(senderel) {
if (senderel.value == '') {senderel.value = senderel.getAttribute('defvalue');};
}