function changeFontSize (job) {
	size = document.getElementsByTagName("body")[0].style.fontSize ? document.getElementsByTagName("body")[0].style.fontSize : ".9em" ;
	switch (job) {
		case "+":
			switch (size) {
				case "0.7em": 
					size = ".75em"; break;
				case "0.75em":
					size = ".9em"; break;
				case "0.9em":
					size = "1em"; break;
				case "1em":
					size = "1.2em"; break;
			}
			break;
		case "-":
			switch (size) {
				case "1.2em":
					size = "1em"; break;
				case "1em":
					size = ".9em"; break;
				case "0.9em":
					size = ".75em"; break;
				case "0.75em":
					size = ".7em"; break;
			}
			break;
	}
	document.getElementsByTagName("body")[0].style.fontSize = size;
}

function changePageSize (job) {
	width = document.getElementById("page").style.width ? document.getElementById("page").style.width : "780px";
	switch (job) {
		case "-":
			switch (width) {
				case "100%":
					width = "1000px"; break;
				case "1000px":
					width = "780px"; break;
				case "780px":
					width = "580px"; break;
			}
			break;
		case "+":
			switch (width) {
				case "1000px":
					width = "100%"; break;
				case "780px":
					width = "1000px"; break;
				case "580px":
					width = "780px"; break;
			}
			break;
	}
	document.getElementById("page").style.width = width;
}