DD_belatedPNG.fix('img, #header, #content, a.current');

$("#flip img").hover(
         function()
         {
          this.src = this.src.replace("_off","_on");
         },
         function()
         {
          this.src = this.src.replace("_on","_off");
         }
);

function enterTerm()
{
	var which = document.getElementById("searchmain");
	
	if (which)
	{
		if (which.value == "")
		{
			alert("Please enter a search term");
			return false;
		} else {
		
			if (which.value.match(/[^a-zA-Z0-9 ]/g)) {
                    which.value = which.value.replace(/[^a-zA-Z0-9 ]/g, '');
               }
			submit();
		}
	}
}