Update image relative paths to absolute paths

Alert images (warning icon, diagonal stripe pattern) are not being rendered in UNL Today.

sharedcode/alert.shtml

<!--#config timefmt="%Y%m%d%H%M" -->
<!--#if expr="(${DATE_LOCAL} >= 201302211600) && (${DATE_LOCAL} < 20130222)" -->
<section class="wdn-band" style="background: url(../splash/images/caution-border.png), url(../splash/images/caution-border.png);
-	background: url(../splash/images/caution-border.svg), url(../splash/images/caution-border.svg); background-color: #d4440b; background-repeat: repeat-x, repeat-x; background-position: 50% 0, 50% 100%; color: #fff;">
+	background: url('http://www.unl.edu/splash/images/caution-border.svg'), url('http://www.unl.edu/splash/images/caution-border.svg'); background-color: #d4440b; background-repeat: repeat-x, repeat-x; background-position: 50% 0, 50% 100%; color: #fff;">
<div class="wdn-inner-wrapper wdn-inner-padding-lg">
<div class="wdn-grid-set">
-			<div class="bp2-wdn-col-one-seventh">			  	
-				<img src="../splash/images/caution-icon.svg" onerror="this.src=../../splash/images/caution-icon.png" style="padding-top: 0.563em;">
+			<div class="bp2-wdn-col-one-seventh">
+				<img src="http://www.unl.edu/splash/images/caution-icon.svg" onerror="this.src=http://www.unl.edu/splash/images/caution-icon.png" style="padding-top: 0.563em;">
</div>
<div class="bp2-wdn-col-six-sevenths">
<i class="icon-attention"></i>
@@ -19,11 +19,11 @@
</section>
<!--#elif expr="(${DATE_LOCAL} >= 201302220430) && (${DATE_LOCAL} <= 201302221000)" -->
<section class="wdn-band" style="background: url(../splash/images/caution-border.png), url(../splash/images/caution-border.png);
-	background: url(../splash/images/caution-border.svg), url(../splash/images/caution-border.svg); background-color: #d4440b; background-repeat: repeat-x, repeat-x; background-position: 50% 0, 50% 100%; color: #fff;">
+	background: url('http://www.unl.edu/splash/images/caution-border.svg'), url('http://www.unl.edu/splash/images/caution-border.svg'); background-color: #d4440b; background-repeat: repeat-x, repeat-x; background-position: 50% 0, 50% 100%; color: #fff;">
<div class="wdn-inner-wrapper wdn-inner-padding-lg">
<div class="wdn-grid-set">
-			<div class="bp2-wdn-col-one-seventh">			  	
-				<img src="../splash/images/caution-icon.svg" onerror="this.src=../../splash/images/caution-icon.png" style="padding-top: 0.563em;">
+			<div class="bp2-wdn-col-one-seventh">
+				<img src="http://www.unl.edu/splash/images/caution-icon.svg" onerror="this.src=http://www.unl.edu/splash/images/caution-icon.png" style="padding-top: 0.563em;">
</div>
<div class="bp2-wdn-col-six-sevenths">
<i class="icon-attention"></i>
@@ -36,4 +36,4 @@
</div>
</section>
<!--#else -->
-<!--#endif -->
\ No newline at end of file
+<!--#endif -->