//-----------------Tutotial85---------------------
$(document).ready(function() {
	//function grab the height and the width of the window//
	function move_div() {
		window_width =	 $(window).width(); //use jquery selector to select the window width//
		window_height =	 $(window).height();
		
		//grab the size of the object
		obj_width =		$('#center').width();
		obj_height = 	$('#center').height();
		
		//center the div
		$('#center').css('top', (window_height / 2) - (obj_height / 2) ).css('left', (window_width / 2) - (obj_width / 2) );
	}
	
	move_div();
	
	$(window).resize(function() {
		move_div();
	});
});

function MM_validateForm() { //v4.0
  if (document.getElementById){
    var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
    for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
      if (val) { nm=val.name; if ((val=val.value)!="") {
        if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
          if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
        } else if (test!='R') { num = parseFloat(val);
          if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
          if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
            min=test.substring(8,p); max=test.substring(p+1);
            if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
      } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
    } if (errors) alert('The following error(s) occurred:\n'+errors);
    document.MM_returnValue = (errors == '');
} }