Date Picker with Page Breaks

I have restriction javascript code for the date picker in the header for two datepicker fields. It is working on the first page of a multiple page form only. But if i put the date fields on the second page OR if I hit previous to return to the first page and make revisions, the restriction code is not applied. Is there a way to force that code to apply every time that page loads? I need date fields in other sections of the form, not just the first.

<script>
	jQuery.noConflict();

	jQuery(document).ready(function($) {
	$( "#input_1_7" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });
	});

	jQuery(document).ready(function($) {
	$( "#input_1_8" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });
	});

	jQuery(document).ready(function($) {
	$( "#input_1_39" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });
	});

</script>

Thank you Rob, looking at it I thought that would work but so far it is not. Here is the code I'm using:

<script type="text/javascript">

	jQuery(document).bind('gform_post_render', function(){

	jQuery( "#input_1_7" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });

	jQuery( "#input_1_8" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });

	jQuery( "#input_1_39" ).datepicker({ minDate: '0', gotoCurrent: true, prevText: '', showOn: 'both', buttonImage: '/wp-content/plugins/gravityforms/images/calendar.png', buttonImageOnly: true, beforeShowDay: function(date){ if (date.getDay() == 0){ return [false,''];  } else {  return [true, '']; }}  });

	});

</script>

Any thoughts on what I'm doing wrong?!

Right on, thanks for posting - glad you got it working!