// Site search validation
function s_validate(formObject){if(formObject.elements['keywords'].value == '' || formObject.elements['keywords'].value == 'Search'){alert('Please enter a keyword or keywords before submtting.');return false;} else {return true;}}
function clear_search(s) {if (s.defaultValue==s.value || s.value=='SEARCH') s.value = ""}

// check all uncheck all functions
function CheckAll(chk)
{
for (i = 0; i < chk.length; i++)
chk[i].checked = true ;
}

function UnCheckAll(chk)
{
for (i = 0; i < chk.length; i++)
chk[i].checked = false ;
}


// Rotation for header images on generic tranformation/application pages, search, etc...
function random_head(){
var images=new Array()

images[1]='mast_lvl_search1.jpg';
images[2]='mast_lvl_search2.jpg';
images[3]='mast_lvl_search3.jpg';
images[4]='mast_lvl_search4.jpg';
images[5]='mast_lvl_search5.jpg';
images[6]='mast_lvl_search6.jpg';
images[7]='mast_lvl_search7.jpg';
images[8]='mast_lvl_search8.jpg';
images[9]='mast_lvl_search9.jpg';
images[10]='mast_lvl_search10.jpg';
images[11]='mast_lvl_search11.jpg';
images[12]='mast_lvl_search12.jpg';
images[13]='mast_lvl_search13.jpg';
images[14]='mast_lvl_search14.jpg';
images[15]='mast_lvl_search15.jpg';
images[16]='mast_lvl_search16.jpg';
images[17]='mast_lvl_search17.jpg';
images[18]='mast_lvl_search18.jpg';

var foo=Math.floor(Math.random()*images.length)
if (foo==0)
foo=1;

document.write('<img src="/images/mastheads/' + images[foo] + '" border="0" alt="" title="" />');
}