// ----------------------------------------------------------------------------------------------------------------------------------------
// html & css functions
// ----------------------------------------------------------------------------------------------------------------------------------------

function changeObjCSS(theClass,element,value) {
	//documentation for this script at http://www.shawnolson.net/a/503/
	var cssRules;
	if (document.all) { cssRules = 'rules'; }
	else if (el) { cssRules = 'cssRules'; }
	for (var S = 0; S < document.styleSheets.length; S++){
		for (var R = 0; R < document.styleSheets[S][cssRules].length; R++) {
			if (document.styleSheets[S][cssRules][R].selectorText == theClass) {
				document.styleSheets[S][cssRules][R].style[element] = value;
			}
		}
	}
}

// ----------------------------------------------------------------------------------------------------------------------------------------

function changeObjImageSize(objectId,newWidth,newHeight) {
	imgString = 'theImg = el("'+objectId+'")';

	eval(imgString);

	oldWidth = theImg.width;
	oldHeight = theImg.height;

	if(newWidth>0) { theImg.width = newWidth; }
	if(newHeight>0){ theImg.height = newHeight; }
}

// ----------------------------------------------------------------------------------------------------------------------------------------

function changeObjColor(theObj,newColor){
	eval('var theObject = el("'+theObj+'")');

	if (theObject.style.backgroundColor==null) { theBG='white'; }
	else { theBG=theObject.style.backgroundColor; }

	if (theObject.style.color==null) { theColor='black'; }
	else { theColor=theObject.style.color; }

	//alert(theObject.style.color+' '+theObject.style.backgroundColor);
	switch(theColor){
		case newColor:
			switch(theBG){
				case 'white':
					theObject.style.color = 'black';
					break;

				case 'black':
					theObject.style.color = 'white';
					break;

				default:
					theObject.style.color = 'black';
					break;
	  		}

	  		break;

	  	default:
			theObject.style.color = newColor;
			break;
	}
}

// ----------------------------------------------------------------------------------------------------------------------------------------