//main
var initCols = function() {
	 //console.log('!');
	
	var page = document.getElementById('Page');
	
	var leftCol = getElementsByClassNames('leftCol', 'div', page);
   //console.log('left ' + leftCol.length );

  var midCol = getElementsByClassNames('midCol', 'div', page);
	 //console.log('mid ' + midCol.length );

	var theHeight = getElementHeight(midCol[0]) + 'px';
	 //console.log('height ' + theHeight );

	leftCol[0].style.height = theHeight;
	 //console.log('leftCol[0] ' + leftCol[0]);
  
	var browserName=navigator.appName;
	//console.log('browser ' + browserName);
  if (typeof document.body.style.maxHeight == "undefined") {
	  //alert('old n busted');
		midCol[0].style.height = theHeight;
	} else {
		//alert('new browser');
		midCol[0].style.minHeight = theHeight;
	}
	
	
	if (getElementsByClassNames('threeCol', 'div').length == 1) {
	  cols = 3;	
	} else {
		cols = 2;	
	}
	
	if (cols == 3) {
		var rightCol = getElementsByClassNames('rightCol', 'div', page);
		 //console.log('right ' + rightCol.length );		
		rightCol[0].style.height = theHeight;
  }
}


//returns an array of elements by class name
var getElementsByClassNames = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};		
	}
	return getElementsByClassName(className, tag, elm);
};

//Gets elements pixel height
function  getElementHeight(theElt){
	      //console.log('getElementHeight');
        var browserName=navigator.appName;
				//console.log('browser ' + browserName);
         if (browserName=="Microsoft Internet Explorer"){
                var is_ie=true;
         } else {
                var is_ie=false;
         }
				 var docObj = theElt;
				 //console.log('is_ie ' + is_ie);
        if(is_ie){
                tmphght = docObj.offsetHeight;
								//alert(' ie tmphght ' + tmphght);
        }
        else{
                
                var tmphght1 = document.defaultView.getComputedStyle(docObj, "").getPropertyValue("height");
                tmphght = tmphght1.split('px');
                tmphght = tmphght[0];
								//console.log(' notIE tmphght ' + tmphght);
        }
        return tmphght;
}

//Run it

  initCols();