function createWindow(cUrl,cName,cFeatures) {
	var xWin = window.open(cUrl,cName,cFeatures)
	}

function clearText(thefield) {
        if (thefield.defaultValue == thefield.value)
                thefield.value = ""
        else thefield.value = thefield.defaultValue
}


function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';

}