Sometimes when content is coming out of a CMS it's faster to target an element by just adding a unique class via jQuery. This does that for you with any element(s) of your choosing. See sample function call at the bottom.

addClass.js

jQuery(document).ready(function( $ )
{
	/**
	 * @param obj - array of strings. The element name to be targeted
	 */
	 function addClasses( objArray )
	 {
	 	for ( i = 0; i < objArray.length; i++ )
	 	{
	 		// Save CPU by storing this in local variable
	 		var obj = objArray[i];

	 		// Unique counter
	 		var j = 0;

			// Classname must not start with dot. Check if exists
			// and remove if so
			var className = obj;
			if ( className.substr( 0, 1 ) == '.' )
			{
				className = className.substr( 1 );
			}

			// Now iterate through elements and add the class
			$( obj ).each(function()
			{
				$( this ).addClass( className + '-' + j );
				j++;
			});	
		}
	}

	addClasses( [".form-table", "h3", "tr", ".desc"] );
});