function Page_onLoad()
{
	var number;
	var random_number="";

	// Figure out if the browser is Netscape 4.x
    var agt=navigator.userAgent.toLowerCase();
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);
    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav4 = (is_nav && (is_major == 4));

	// Skip this if using NS 4 (it doesn't support the action)
	if (!is_nav4)
	{
		today=new Date();
		jran=today.getTime();
		ia=9301;
		ic=49297;
		im=233280;

		number=6;
		jran = (jran*ia+ic) % im;
		random_number = Math.ceil( (jran/(im*1.0)) *number);
		// Loads the appropriate image

		switch (random_number){
			case 1: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_01.jpg)";break;
			case 2: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_02.jpg)";break;
			case 3: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_03.jpg)";break;
			case 4: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_04.jpg)";break;
			case 5: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_05.jpg)";break;
			case 6: document.getElementById("pageheader").style.backgroundImage="url(/images/back_rotations/back_header_06.jpg)";break;
		}
	}
}