function init() {
	document.onkeydown = register;
}

function register(e) {
	if (!e) e = window.event;
	var k = e.keyCode;
	if (e.ctrlKey) {
		var f = document.forms[0];
		if (document.getElementById) {
			var d;
			if (k == 37) {
				d = document.getElementById('previous_page');
			}
			if (k == 39) {
				d = document.getElementById('next_page');
			}
			if (d) location.href = d.href;
		}
	}
}

function getElementbyClass(classname){
partscollect=new Array()
var inc=0
var alltags=document.all? document.all : document.getElementsByTagName("*")
for (i=0; i<alltags.length; i++){
	if (alltags[i].className==classname)
		partscollect[inc++]=alltags[i]
	}
return partscollect;
}

function view(stat) {
ob=new Array()
	if (stat == "on") {
		ob = getElementbyClass("showDiv");
		for (i=0; i<ob.length; i++){
			ob[i].className += " vis";
		}
		el=document.getElementById("viewOff");
		el.className="viewon";
		el=document.getElementById("viewOn");
		el.className="viewoff";
	}
	if (stat == "off") {
		ob = getElementbyClass("showDiv vis");
		for (i=0; i<ob.length; i++){
			ob[i].className = "showDiv";
		}
		el=document.getElementById("viewOn");
		el.className="viewon";
		el=document.getElementById("viewOff");
		el.className="viewoff";
	}
}

function show(el) {
ob = document.getElementById(el);
	if (ob.className == "showDiv") {
		ob.className += " vis";
	}
	else {
		ob.className = "showDiv";
	}
}

window.onload = init;