$(document).bind('keydown', KdDescribeEvent);

           
function KdDescribeEvent(event){
	if(event.which == "37" && event.ctrlKey == true) 
	{
		if($("#prev_page_nav").html() != null)
			document.location.href=$("#prev_page_nav").html();
	}
	//alert("left");
	if(event.which == "39" && event.ctrlKey == true) 
	{
		if($("#next_page_nav").html() != null)
			document.location.href=$("#next_page_nav").html();
	}
				
}