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/**************************************************************
Back, takes you back (or to a default page when there is nothing to go back to)
Author : Tom van Gemert
For: Trimedia Interactive Projects
http://www.trimedia.nl
Added to project: 20070123	
**************************************************************/

function get_back(page) {

	if (history.length < 2) {
		window.location = page;
	} else {
		history.back();
	}

}


/**************************************************************
Set a div to a height if smaller... Or to page height or to a
static height, depending on parameters and content of said divs.

Author : Tom van Gemert
For: Trimedia Interactive Projects
http://www.trimedia.nl
Added to project: 20051207

Script based on: http://www.saila.com/attic/sandbox/set-height.html
**************************************************************/

function compareNum(a,b) {
	return a-b
}


function pageHeight() {

  var myWidth = 0, myHeight = 0;

  if( typeof( window.innerWidth ) == 'number' ) {
	//Non-IE
	myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
	//IE 6+ in 'standards compliant mode'
	myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
	//IE 4 compatible
	myHeight = document.body.clientHeight;
  }
  //window.alert( 'Height = ' + myHeight );
  return myHeight;

}

function set_navcontainer_height() {

	min_height = 453;
	h = d.getElementById('mainnav').offsetHeight

	if (h < min_height) {
		h = min_height;
	}
	 
	d.getElementById('navcontainer').style.height = h + 154 + "px";

}

function set_div_height(static_height, min_height) {

	page_height = pageHeight();
	d = document;
	
	set_navcontainer_height(min_height)

	box = new Array("container","content_container","sidebar_container","navcolumn");
	box_top_space = new Array(0,153,153,0);
	box_length = box.length;
	box_heights = new Array(box_length);

	for(x = 0; x < box_length; x++) {

		boxname = box[x];

		if (d.getElementById(box[x]) != null) {
	  		h = d.getElementById(box[x]).offsetHeight + box_top_space[x];
	  		box_heights[x] = h;
	  	} else {
	  		box_heights[x] = 0;
	  	}
	  	
	  	//alert(boxname + ' ' + box_heights[x]);

	 }


	box_heights.sort(compareNum);
	tallest_h = box_heights[(box_length-1)];
	//alert("min_height: " + min_height + " tallest_h: " + tallest_h + " page_height: " + page_height);

	if (static_height != "") {

		for(x = 0; x < box_length; x++) {
		  if (d.getElementById(box[x]) != null) {
		  	d.getElementById(box[x]).style.height = static_height - box_top_space[x] + "px";
		  }
		}

	} else {

		if (tallest_h < min_height) {

			for(x = 0; x < box_length; x++) {
			  if (d.getElementById(box[x]) != null) {
			  	d.getElementById(box[x]).style.height = min_height - box_top_space[x] - 1 + "px";
			  }
			}

		} else {

			if (tallest_h < page_height) {

				for(x = 0; x < box_length; x++) {
					if (d.getElementById(box[x]) != null) {
						d.getElementById(box[x]).style.height = page_height - box_top_space[x] - 1 + "px";

					}
				}

			} else {

				for(x = 0; x < box_length; x++) {
					if (d.getElementById(box[x]) != null) {
						d.getElementById(box[x]).style.height = tallest_h - box_top_space[x] - 1 + "px";
					}

				}

			}

		}

	}

}


/**************************************************************
Standards Compliant image Rollover Script
Author : Daniel Nolan
http://www.bleedingego.co.uk/webdev.php
**************************************************************/

function initRollovers() {

	if (!document.getElementById) return

	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {

		if (aImages[i].className == 'imgover') {

			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_on'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);

			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;

			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}

			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_on'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}

		}

	}

}


sfHover = function() {

	var sfEls = document.getElementById("mainnav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" over";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" over\\b"), "");
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);


//-->