// Splintered striper 1.3+
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// reworking of Zebra Tables and similar methods which works not only for tables and even/odd rows,+
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// but as a general DOM means of assigning any number of classes to children of a parent element.+
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// Patrick H. Lauke aka redux / www.splintered.co.uk+
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// Distributed under the Creative Commons Attribution-ShareAlike license - http://creativecommons.org/licenses/by-sa/2.0/+
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/*+
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 * Summary:      Core experiment function that applies any number of classes to all child elements+
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 *               contained in all occurences of a parent element (either with or without a specific class)+
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 * Parameters:   parentElementTag - parent tag name+
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 *               parentElementClass - class assigned to the parent; if null, all parentElementTag elements will be affected+
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 *               childElementTag -  tag name of the child elements to apply the styles to+
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 *               styleClasses - comma separated list of any number of style classes (using 2 classes gives the classic "zebra" effect)+
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 * Return:       none+
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 */+
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function striper(parentElementTag, parentElementClass, childElementTag, styleClasses)+
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{+
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	var i=0,currentParent,currentChild;+
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	// capability and sanity check+
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	if ((document.getElementsByTagName)&&(parentElementTag)&&(childElementTag)&&(styleClasses)) {+
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		// turn the comma separate list of classes into an array+
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		var styles = styleClasses.split(',');+
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		// get an array of all parent tags+
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		var parentItems = document.getElementsByTagName(parentElementTag);+
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		// loop through all parent elements+
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		while (currentParent = parentItems[i++]) {+
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			// if parentElementClass was null, or if the current parent's class matches the specified class+
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			if ((parentElementClass == null)||(currentParent.className == parentElementClass)) {+
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				var j=0,k=0;+
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				// get all child elements in the current parent element+
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				var childItems = currentParent.getElementsByTagName(childElementTag);+
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				// loop through all child elements+
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				while (currentChild = childItems[j++]) {+
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					// based on the current element and the number of styles in the array, work out which class to apply+
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					k = (j+(styles.length-1)) % styles.length;+
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					// add the class to the child element - if any other classes were already present, they're kept intact+
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					currentChild.className = currentChild.className+" "+styles[k];+
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				}+
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			}+
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		}+
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	}+
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}+
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